Taking the All-Round View

Between the Echo Arena and Jury's Inn, Liverpool
Camera: RICOH THETA S | Date: 22-11-2016 18:11 | ISO: 800 | Exp. Time: 1/30s | Aperture: 2.0 | Focal Length: 1.3mm

Apologies if it’s been a bit quiet here recently, but I’ve been submerged under a tidal wave of new (to me) technologies, and it hasn’t left much space in this bear’s brain for blogging. In the last month or so I’ve had to get my head around OpenLDAP, C#, Java development (OK, I’ve done that before, but not for about 8 years), microservices, Java Server Faces, Primefaces, and that’s just for one client. The other’s been a bit quiet, but even there I’ve had to outline and prove the concept of how to interface with an external expert systems framework.

However, that hasn’t stopped me “investing” in a few new toys. After the Cornwall trip I decided that with my changing eyesight I needed an infrared camera with an electronic viewfinder, and commissioned the guy in the USA who supplied the Panasonic GF3 to source and convert a GX7. Setting aside a nearly two-week delay through customs, mainly due to ParcelForce insisting on sending the charge note by second-class post (grr…), this turned up very promptly and works beautifully. It does appear to be a bit more fussy than the GF3 regarding whether autofocus will work in low-contrast scenes, but as I’m not likely to be using it to capture fast-moving action that’s not a major issue.

More recently, I’ve also plumped for a 360 degree camera, the Ricoh Theta S. This is a fun little gadget about the size of a small chocolate bar, with a lens on each side, and takes a 360 degree panorama in a single click of the button. It will do both video and stills, but the latter is probably more immediately interesting from my viewpoint.

There are some interesting dynamics to using this device. Firstly, it’s a return to much more of a “click and wait” process, on a shorter timescale than but otherwise not dissimilar to film photography. You can use it tethered to a phone or tablet, but a much more natural way to use it is to look for an interesting scene, hold it above your head and click, then look later at what you captured. This requires a discipline of “pre-visualisation” as Ansel Adams called it, but with the variation that you can’t just focus on what’s in front of you, but also need to be aware of what’s behind, above and below as well. A line of subjects on the horizon won’t produce a very good 360 panorama if you have an ugly or boring sky, ground or scene behind you. My usual policy of “getting high” may work fairly well, although that will produce images with much of the interest below the horizon line.

On the other hand, you do get a fascinating opportunity for what I call “post exploration”. Having downloaded the images, you can explore round them, looking at details which were invisible to you at the point of clicking, and trying to find a perspective which makes an interesting shareable static image. I’m becoming quite fascinated by the “small world” perspectives like the above, but there’s a lot of scope to go back to a favourite image and explore it again.

This process does also mean that I’ve had to join the selfie culture. At best, there are going to be a lot of shots of my thumb and the top of my bald head. However there’s a temptation to hold the camera lower and include yours truly in shot, so you have been warned 🙂

Editing is a bit tricky, as so far I haven’t found very good tools for the PC. There are reasonable tools for the tablet, which provides a fast and flexible way to view and explore the image, but the two-way export process if you want to return a cropped image (like the one above) to the PC is a bit fiddly. My search continues.

I went for the Ricoh Theta S, a slightly more expensive option, as reviews promised better image quality. It’s not bad, but like most small-sensor point and shoots there’s not much dynamic range, and so far I’m getting a lot of shots with blown highlights and muddy shadows. If there was ever a device which would benefit from in-camera HDR then this is it. There may also be some settings to explore, but given the very simple user interface I don’t hold out much hope in that direction. If I really get into this I’ll just have to find a grand for a Panono…

If you’re viewing this on a phone or tablet, have a go at exploring round the following by sliding and twisting (I haven’t worked out how to enable pinch to zoom, but I’m working on it.) Please let me know what you think.

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Taking the Long View

Charlestown Harbour, Conrwall. Stitched from 6 pictures using Autopano Giga
Camera: Panasonic DMC-GX8 | Date: 25-09-2016 10:02 | Resolution: 17167 x 3410 | ISO: 400 | Exp. bias: 0 EV | Exp. Time: 1/800s | Aperture: 8.0 | Focal Length: 12.0mm | Location: Charlestown | State/Province: Charlestown, Cornwall | See map

I’m aware that I’m a slightly lazy photographer. I’m not a great one for pre-dawn starts or rushing out the minute the weather changes, and I do tend to walk around with a single zoom lens on my camera making the scene fit the lens rather than rushing to change it every shot. The other thing which can happen is I get "stuck" seeing lots of shots with a similar dynamic, rather than looking for variations.

On our recent trip to Cornwall, I kept on seeing potential panoramas, and made lots of them. A few, like this one, I’m quite pleased with, although others were middling. I took almost no 3D shots. A week later I was in Winkworth Arboretum, and I could only see potential 3D shots, almost nothing else.

This may not be a problem. There are plenty of people who focus their photography on a single subject and style, and try to become the real experts in that, like that German couple (Bernd and Hilla Becher) who just took low-contrast photos of water towers. However I do try to be more diverse, but don’t always succeed. I’m not sure what the cure is, or even whether a cure is strictly necessary. If I’m working on a more formal basis a shot list can help, but I think mainly I just need to spend more time shooting and training my eye to see the shots. Here goes…

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Just Get On the Train!, Updated

Regular readers may remember that I classify films and plays according to whether they are about talking about getting on a train (i.e. deep and meaningful journeys into the soul), or actually getting on the train (/boat, /plane, /nuclear power station etc.). It should not surprise you that my own collection has rather more of the latter.

I recently updated the list, which may amuse you.

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Form vs Function – a Tail :) of Three Mice

Just in case you think some of my recent posts have been a bit anti-Microsoft, here’s one in which (spoiler alert!) they win!

Call me old-fashioned, but I very much prefer using a mouse to a trackpad or its relatives, and since my earliest experiences with Windows 3.0, I’ve tended to go for Microsoft mice by preference. Over the years they gained additional buttons and a wheel, lasers replaced the ball, and wireless connections replaced wires, but the core ergonomics and functionality have been maintained and gradually improved. About 2005 this resulted in the Microsoft wireless mouse, of which we have had several, colour matched to different PCs.

However when I started using a MacBook as my primary PC, I had a couple of challenges with this strategy. Firstly, while it may be pure vanity I like to have a mouse which visually matches my laptop, and the somewhat “chunky” Microsoft options didn’t really float my boat. More importantly with the limited set of ports on a MacBook I couldn’t afford to tie up a USB port with the mouse or (worse) risk damaging one if I forgot to unplug the wireless dongle, something I have experienced on other PCs. As the MacBook runs with BlueTooth and internal wireless permanently powered on, a BlueTooth solution seemed sensible.

A visit to PC World didn’t reveal many options. Apart from the Apple mouse (the ergonomics of which I don’t particularly like) most mice seemed to be either wired, WiFi based and/or very chunky. Then I discovered the HP Z5000, an elegant thin white slab, with BlueTooth, two buttons and a wheel. Great!

Or so I thought… Time revealed two problems. One is ergonomic: the wheel is the same smooth white plastic as the body, and if your fingers are at all wet or slippery it is completely impossible to scroll accurately. The  other is electronic, with the PC and mouse periodically becoming “disconnected” and requiring some random mouse movement or, occasionally, cycling the mouse’s power to re-establish connectivity. For reasons not immediately apparent, this appears to become worse when working in bright ambient outside light, just the conditions under which you can’t afford intermittent loss of the mouse’s position.

After working with these limitations for a year, we finally gave up after our last holiday, and decided enough was enough. Research suggested a new option, in the form of the HP Z8000.

This is a piece of gorgeous industrial design: a thin black slab edged in brushed aluminium which is a very good match to the MacBook’s own finish. The top surface is a capacitative touch panel – tap to click the mouse, swipe forward and back to simulate the wheel scrolling normally, or left and right to simulate a horizontal scroll. It also allegedly has much improved power management and connectivity. Wonderful! Well worth the £40+ asking price.

Or so I thought… To start with there’s no evidence whatsoever that HP have addressed the connectivity problems. If anything, they are worse. More of an issue is that the touch panel just doesn’t work very well. If you are very careful and precise with all your movements it’s just about usable in a program like Microsoft Word. However if the software supports any form of horizontal scrolling (e.g. XnView, or Windows Explorer in “tile” mode), then you end up with a working context which jumps about constantly and randomly. With some programs, such as CaptureOne, it becomes almost unusable.

Back to Amazon, and I discover this gem:

Yes, it’s a Microsoft “Designer” BlueTooth mouse. Price about £16, although it does vary. Just a lump of black plastic, although at least it’s now thin enough to work alongside the MacBook. Textured scroll wheel and two obvious buttons, each with a definite “action”. Picks up the control points in CaptureOne without issue. And so far not a single random connectivity problem.

Function trumps form, substance beats style, in mice if not always in men!

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Review: The One Man

By Andrew Gross

Decent Thriller but with Annoying and Unnecessary Timeline Errors

Overall this is a cracking WWII thriller, set around the concept of an Allies break in into Auschwitz to rescue a specific prisoner who holds information vital to the Manhattan Project. Andrew Gross has done a great job of capturing the horror and brutality of life in the labour camp, in the constant shadow of the mass exterminations. He weaves into this some believable characters including a Polish Jew who had successfully escaped from occupied Europe, and is then prevailed upon to return to carry out an almost impossible mission, and his nemesis in the form of a side-lined Abwehr Colonel.

Both the set up of the situation and key players in the first half of the book and the suspenseful execution in the second ploy keep hold your attention turning pages right until the conclusion. The core material seems to have been well researched and is based on some well-documented history including Neils Bohr’s daring escape from the Nazis, and Denis Avey’s extraordinary excursion from the Auschwitz POW camp into the death camp to establish a first-hand record of the horrors.

It’s therefore a great shame that this is to some extent spoiled by a number of frustrating and wholly unnecessary errors in the timeline. Other reviewers have observed how the timelines for the key characters don’t quite “add up”. Beyond that there are completely incorrect factual references. The camp commandment goes to a meeting in May or June 1944 with Heinrich Himmler, fair enough, and Reinhard Heydrich, which would be a bit more of a challenge as he was assassinated in June 1942. The central character observes preparations for D-Day, counting the Stirling bombers out and back in again, and is pleased to benefit from the “newly introduced” Mosquito for the mission. The Mosquito was introduced in late 1940, and the Stirling was almost entirely eclipsed by the Lancaster and Halifax after 1943. Why add these incorrect references, when the book would have been fine without those details altogether?

I enjoyed this story, and will probably read some more of the author’s work, but it did leave me feeling a bit annoyed, and for no good reason.

Categories: Reviews. Content Types: Adventure, Book, Fiction, and Historical novel.
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The Colour Nazis

Once upon a time, not so long ago, there was a movement obsessed with removing colour, especially those whose skin colour or religious preference was different to their own. This went to great extremes, caused the greatest of all wars, and we are all aware of the terrible atrocities done as a result. It is one of the horrors of our current time that those beliefs, which we thought had been consigned to history, seem to be getting some renewed attention and following.

If faced with political extremism, the predominantly liberal groups who control and shape our technology would typically be horrified and opposed. However at the same time they are forcing on us fashions and design paradigms which in their own way are just as odious, impacting the richness of our experience, and limiting rather than improving our ability to interact with technology.

I refer, of course, to the Colour Nazis. The members of this movement probably don’t think of themselves that way, and if forced to adopt a label would choose something much more neutral, but it is becoming apparent that some of their thinking is not that different.

This is not the first time I’ve complained about this. In 2012 I wrote “Tyranny of the Colour Blind, or Have Microsoft Lost Their Mojo?”. The trouble is that things are getting worse, not better. Grappling with Office 2016 I’m coming to grips with some really dramatically stupid decisions which can only be explained by a Nazi zeal to remove the colour from our technological interactions.

Here’s a quick test. Find Open, Save and the Thesaurus in Office 2003:

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Now let’s try Office 2010:

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Not too bad. The white background actually helps by increasing contrast, and the familiar splashes of colour still draw your eye quickly to the right icons, although the Thesaurus is a bit anonymous. Now let’s try Office 2016:

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The faded grey on a grey background colour scheme has wiped out most of the contrast, and you’d be struggling to make these out if you have ageing sight in a poor working environment. The pale pastel yellow of “Open” is still just recognisable, but the “Save ” button has turned to a weird pale purple, and the Thesaurus is completely anonymous. I’d have to go hunting by hovering over each and reading the tooltip. (Before anyone shouts, I know I’ve used an add-in menu here to get a like-for-like comparison, but all this is equally true for the full-sized ribbon controls.)

Now let’s look at a really stupid example. One of Word’s great strengths is the ability to assemble and review tracked changes from multiple reviewers. In Word 2010 each will be assigned a distinctive colour, and I can very quickly see who’s who:

image

OK that works well. Let’s see what they’ve done in Office 2016:

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WTF! One place where colour has a specific role as an information dimension, and they’ve actually taken it away. In the document the markup does use some colour, but in the form of a few pale pastel lines. Instead the screen is cluttered up with the name of the author against every single change, which makes it unreadable if multiple authors have made changes to a single page.

I am always among the first to remind designers not to rely on colour, as it doesn’t work well for about 8% of the population, or in some viewing conditions. But that’s no reason to remove it. Instead you should supplement it (e.g. make icons both distinctive colours and shapes), or allow the users a choice. Word 2016 should allow me to choose whether to use colour or explicit names in markup balloons, and I wouldn’t be having this rant.

There is apparently a name for this fad, “Complexion Reduction” (see Complexion Reduction: A New Trend In Mobile Design by Michael Horton). The problem is that its advocates seem to have lost sight of some key principles of human-computer interaction. One of these is that for normally-sighted people there’s a clear hierarchy in how we spot or identify things:

  1. Colour. If we can look for a splash of colour, that’s easiest. That’s why fire extinguishers are red, or the little red coat was so poignant in Schindler’s List.
  2. Shape / position. We manage a lot of interactions by recognising shapes. That’s why icons work in the first place. We even do this when the affordance supplies text as well. If you’re a native English speaker and reader you will inevitably have tried to move a door the wrong way, because “PUSH” and “PULL” have such similar shapes, and your brain tries shapes first, text second.
  3. Text. When all else fails, read the instructions. That’s not a joke, it’s a real fact about how people’s brains work. If I have to go hunting in a menu or reading tooltips, then the designer has failed miserably.

Sadly I don’t know if there’s any way to influence this. These decisions are probably being made by ultra-hip youngsters with ironic beards and 20 year old eyes who don’t really get HCI. I’d just like one of them to read this blog.

Addendum — May 2019

So the hierarchy for interactions is first colour, then shape, then text.

So please could someone explain to me why the latest versions of Android have also decided to force almost all application icons into a uniform shape (circular on my Sony phone, a rounded rectangle on my Samsung tablet) with exactly the same background colour?

On my phone, all the main Google apps now have icons which are white circles with tiny splashes of the same four colours. The Sony apps (including the main phone functions) are white circles with small icons, using the same pale blue, within them. To add an extra spice, the launcher I use occasionally moves the icons around, if I add a new front-page app or the labels change.

My poor brain has no chance whatsoever. I open my phone, and then have to READ labels to make sure I’m opening the right app. Hopeless!

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Microsoft : Busy Fixing What Ain’t Broke

There’s an interesting, but intensely annoying, behaviour by the big software companies, which as far as I’m aware has no parallel in other areas of production for consumer consumption. We’ve all been used, since the mid-20th century, to the concept of "planned obsolescence" to make us buy new things. While you might argue that this is not great in terms of use of resources, it’s accepted by consumers because the new thing is usually better than the old one. There might be the odd annoyance (as captured by Weinberg’s New Law, on which I’ve written before), but by and large if I buy a new camera, or car, or TV there are enough definite improvements to justify the purchase and any transition pain. In addition I only usually have to make a change either because the old thing has reached the end of its economic life, or the new thing has a new feature I really want.

It’s not that way with core software, and especially Microsoft products (although they are not the only offenders). The big software providers continue to foist endless upgrades on us, but I can’t see any evidence of improvement. Instead I can actually see a lot of what is known in other trades as "de-contenting", taking away useful capabilities which were there before and not replacing them.

Windows 10 continues to reveal the loss of features which worked well under Windows 7, with unsatisfactory or no replacements. I mourn the loss of the beautiful "aero" features of Windows 7 (with its semi-transparent borders and title bars)  and a number of other stylistic elements, but there are some serious functional omissions as well. I couldn’t work out why my new laptop kept on trying to latch onto my neighbour’s Wifi, rather than use my high powered but secure internal service, and discovered that there’s now no manual mechanism to sort WiFi networks or set preferences. There is, allegedly, a brilliant new automated algorithm which just makes it automatic and no bother to the user. Yeah, right. Dear Microsoft, IT DOESN’T ***** WORK. Fortunately in the way of these things I’m not the only one to complain, and literally in the last couple of weeks a helpful Belgian developer has released a tiny utility which replaces the ability to list and manipulate the WiFi networks known to a Windows 10 machine (https://github.com/Bertware/wlan10). That’s great, and the young man will be receiving a few Euros from me, but it shouldn’t have to be this way. By all means add an automatic sequencer to the new system, but leave the manual mechanism as well.

However, my real object of hate at the moment is Microsoft Office. Since I set up the new MacBook with Windows 10 it’s never been entirely happy with the combination of versions I want to use: Office 2010, plus Skype for Business 2016. (Well actually I’d really prefer to use Office 2003, but I’m over that by now :)) I’ve had the odd problem before, having to install Visio 2016 because Visio 2010 and Skype/Lync 2016 keep breaking each other. I’m not sure how that’s even possible given the "side by side" library architecture which Microsoft introduced with Windows XP, but somehow they managed it, and they clearly don’t care enough about the old versions to fix the issue.

I could live with that, but a couple of weeks ago more serious problems set it. There was an odd "blip", and then OneNote just showed blank notebooks with the ominous statement "There are no sections open in this notebook or section group". That looked like a major disaster, as I rely on OneNote both to organise my work and to-do lists on a daily basis, and as a repository of notes going back well over 10 years. However a quick check online, and on other devices revealed that my data was fine. I lost a good chunk of a working day to trying to fix the problem, including a partial installation of Office 2016 to upgrade to OneNote 2016. That’s a lot more difficult that it should be, and something Microsoft really doesn’t want you to do. Nothing worked. By the end of the day I was so messed up I did a system restore to the previous day, hoping that would restore my system state and fix the original problem. At first glance this appeared to fix Office, although OneNote was still showing blank notebooks. However I then had a moment of inspiration and went online to OneDrive.com, and clicked the "edit in OneNote" option. This magically re-synced things, and got my notebooks re-opened on the laptop. Success?

Unfortunately not. Things seemed OK for a few days, but then I started getting odd error messages, and things associated with Outlook and the email system started breaking. Apparently even a complete "System Restore" hadn’t completely restored the registry, and my system couldn’t work out which version of Outlook was installed. An office repair did no good, and eventually I decided to bite the bullet and upgrade to Office 2016. Even that wasn’t trivial, and took a couple of goes but eventually I got there, and my system is now, fingers crossed, stable again.

And that would be fine if Office 2016 was actually a straightforward upgrade from its predecessors, maintaining operational compatibility under a stable user interface, but that’s where I came in. The look and feel, drained of colour and visual separation, is in my opinion poorer than before but I’ll probably get used to it. I’ve got an add-in (the excellent Ubit Menu) which gives me a version of the ribbon which mimics the Office 2003 menus, and which I also used with Office 2010, so I can quickly find things. But what that can’t do is fix features which Microsoft have just removed.

Take Outlook for example. I really liked the "autopreview" view on my inbox folders. Show me a few lines of unread emails, so I can both quickly identify them and, importantly, scan the content to decide whether they need to be processed urgently and if any can just be deleted, but hide the preview once I’ve read them. Brilliant. Gone. I have multiple accounts under the same Outlook profile, which is how Microsoft tell you it’s meant to work, and in previous versions I could adjust the visual properties of the folder pane at the left so I could see all the key folders at once. Great. Gone. Now I’m stuck with a stupid large font and line separation which would be great if I was working on a tablet with my fingers and a single mail account, but I’m not. Dear Microsoft, some people still use a ****** PC and a mouse…

Or take Word. Previous "upgrade" Office installations carefully preserved the styles in the "Normal" template, so that opening a document in the new version preserved its layout. Not this time. I’ve had to go through several documents with detail page layouts and check each one.

None of this is a disaster, but it is costing me time and money and it wouldn’t be necessary if either Microsoft didn’t keep forcing us to upgrade, or if they made sure to keep backwards compatibility of key features. It’s also not just a Microsoft problem: Adobe and Apple are equally guilty (witness features lost from recent versions of OSX, or the weird user interface of Acrobat XI). The problem seems to be that the big software companies don’t seem to have a business model for just keeping our core software "ticking over", and they confuse change with improvement, which is proving to not be the case now that these systems are functionally mature and already do what people need them to do.

I’m not sure what the answer is, or even if there is an answer. We can’t take these products away from the companies, and we don’t want them to become moribund and abandoned, gradually decaying as changes elsewhere render them unusable. Maybe they need to listen harder to their existing customers, and a bit less to potential "captures", but I’m not convinced that’s going to happen. Let the struggle continue…

Posted in Agile & Architecture, PCs/Laptops, Thoughts on the World | 1 Comment

Conversion Challenges

I have an interesting challenge, as one of the projects I am working on want to stop their environments to save costs, but I need ongoing access to the data. I have a dump from an Oracle database, but I need to convert to SQL/Server which is much more portable. The solution looks like an excellent little product from "Intelligent Convertors", who have a whole suite of these tools. I’ll try it and let you know how I get on.

Intelligent Converters - software to convert MS Access, DBF and Oracle databases to MySQL and vice versa, PDF to Word, PDF to HTML, PDF to text

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A Bit Stretched!

The Opera House in Prague: Kolor stitching 4 pictures | FOV: 131.87 x 47.47 ~ 24.87 | Projection: Mercator | Color: LDR
Camera: Panasonic DMC-GX8 | Date: 30-06-2016 21:35 | Resolution: 9183 x 3804 | ISO: 3200 | Exp. bias: 0 EV | Exp. Time: 1/25s | Aperture: 5.6 | Focal Length: 12.0mm | State/Province: Prague | See map

Apologies if there hasn’t been much activity on the blog lately. I’m deep into the invention of the expert system I wrote about previously, and that’s filling the relatively small brain of this bear, and not leaving much space for other creative activities. However, I am gently working on a couple of longer articles I hope to share with you soon.

Meanwhile, I am working here and there to catch up on the photographic backlog. Frances and I had a couple of days in Prague about a month ago, and predictably I took a fair few photographs. What was interesting was the dynamic of the type of shots: I did relatively little close-up or 3D photography, but the opportunity to generate big panoramas positively abounds, especially if, as I did, you get up to the top of several of the towers open to the public. I’ve recently switched my panoramic development to Kolor’s Autopano Giga, which coupled with Capture One makes the whole process very quick and painless, effortlessly adjusting and stitching even images taken with a moving camera (moving from the waist, rather than rotating the camera around its optical centre as per correct technique), and those requiring substantial perspective correction.

The attached was taken from a point where the main entrance of the opera house filled the frame, and the two sides stretched away from me down two streets orthogonal to each other. It was also taken late at night, hand-held by available light but the Panasonic GX8 has made a decent job of managing highlights even if the sky does fall away to black. I think it works.

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Fashion Makes Doing IT Harder

I’m about to start building an expert system. Or maybe I might call it a "knowledge base", or a "rule based system". It’s not an "AI", as at least in its early life it won’t have any self-learning capability, but will just take largely existing guidance from master technicians, and stick some code behind it to deliver the right advice at the right time. Expert system is a good term, or so I thought…

It’s a while since I built a rule engine, and I’ve never truly designed an expert system before, so I thought it might be a good idea to do some reading and understand the state of the art. That’s when the the trouble started. My client recommended a book on analysis for knowledge based systems, which I managed to track down for 1p + postage (that should have warned me). I got through most of the introduction, but statements such as "these new-fangled 4GLs might be interesting" and "we don’t hold with this iterative development malarkey" (I paraphrase slightly, but not much) made me realise that the "state of the art" documented was at least a generation old. The book has a few sound ideas about data structure, but pretty much everything it says about technology or process is irrelevant.

Back on Amazon, and I tried searching for "expert system", "knowledge base" and "rule based system". That generates a few hits, but nothing of any substance younger than about 12 years old, nothing on Kindle, and prices varying dramatically between a few pence and the best part of £100, both indications of "this is an old, rare book" and neither tempting me to make a punt. It doesn’t help that the summaries tend to be a list of technologies I’ve never heard of, and few seem to be focused on re-usable concepts and techniques.

OK, I thought. There’s obviously just a new term and I don’t know it. Wikipedia wasn’t much help, observing that the term "expert system" has largely gone out of use, and offering two opposing views why. Either expert systems became discredited and no-one does them any longer (I don’t believe that), or they just became "business as usual" (quite possible, but a good reason why you might write a book about them, not the opposite). No indication of the "modern" term, and few recent references.

Phone a friend. I emailed a couple of friends both of whom are quite knowledgeable in a breadth of IT topics hoping that one of them might say "Oh yes, we now just call them XXX". Nope. Both suggested AI and one suggested "cognitive computing", but as I’ve already observed, that’s a fundamentally different topic. Beyond that both were just suggesting the same terms I’d already tried.

Googling a practical question such as "rule based systems in .NET" produces a few hits and suggests that the state of technology support is pretty good. For example, Microsoft put the "Windows Workflow Foundation" into .NET in about 2008, and this includes a powerful rule engine which is perfectly reusable in its own right. So the technology is there, but again there’s not much general information on how to use it.

This appears to be a case where fashion is getting in the way. If something works, but is not "in", then authors don’t want to write about it, and editors don’t actively commission material. If the "thing" is something where the technology has improved, but not in a "sexy" way, then it goes unreflected in deeper or third party literature. Maybe that explains why Oracle seem driven to rename all their technologies every couple of years, it’s their way of attracting at least a modicum of interest even if it does confuse the hell out of developers trying to work out what has changed, and what really hasn’t.

So be it. I’m going to build a rule-based expert system knowledge base, and I don’t care if that’s not the modern term. It’s just frustrating that no-one seems to have written about how to do this with 2015 technology…

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Does Your Broadband Beat a Carrier Pigeon?

There’s a famous quote "never underestimate the bandwidth of a station wagon full of tapes bowling down a highway". Musing on this I decided to try and estimate the bandwidth of a carrier pigeon, given modern storage technology. According to Wikipedia, a racing pigeon can maintain about 50 miles an hour over moderate distances. So let’s feed our pigeon, strap a 64GB micro SD card to each leg, and send him from Bristol to London,which should take about 2 hours.

128GB in 2 hours is roughly 1GB/minute, or say 160 Mbps (megabits per second). That’s about the effective transfer rate for USB 2, and is getting on for Gigabit LAN speed. It’s about 50 times faster than the best I get from BT Broadband, and probably over 100 times faster than the sustained broadband bandwidth over a week, which is about how long 128GB would take to transfer. Plus remember that that’s the download speed, and upload is another factor of ten slower…

Now I would be the first to admit that there are some limitations to the "pigeon post" architecture, especially in terms of range. The latency also precludes chatty protocols. But in terms of sheer transfer bandwidth Yankee Doodle Pigeon has "broadband" beaten hands down!

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Going Greener!

Going Greener - the E Class Respray Event!
Camera: Panasonic DMC-GX8 | Date: 03-05-2016 10:19 | Resolution: 4935 x 3084 | ISO: 200 | Exp. bias: -33/100 EV | Exp. Time: 1/100s | Aperture: 8.0 | Focal Length: 12.0mm | Lens: LUMIX G VARIO 12-35/F2.8

After talking about it for over a year, I decided that my transport needed to be “greener”, and finally bit the bullet on the respray. This is “Vivianite Green”, actually an official Mercedes colour in the late 90s, but for some reason Mercedes seem to have almost completely abandoned cheerful colours in their factory output. Hopefully I can be a small part of rectifying that deficiency. Put your sunglasses on!

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