Author Archives: qsf

Morning, with a hint of castle

Penshurst Place, Kent

My other electric vehicle is a BMW…

In my research group in the computer lab at Cambridge University, we have a few fun toys. This is one of them: an electric unicycle; there are a few different makes of these now, this one is a Ninebot One.

I’m not very good at it yet, but it’s great fun to learn – this is after I’ve been having quick goes on it occasionally for the last year or so.

It’s more fun outside. They’ll go to nearly 20 miles per hour. Haven’t been that brave yet…

Love me tender

The one pound coin was introduced in 1983. I remember my excitement when I got my first one!

Well now it’s being phased out in favour of a shiny new one, launched last week and dubbed ‘the most secure coin in the world’. You can read all about it on www.thenewpoundcoin.com. The last one, of course, was a little too early to have its own website. I wonder what URL they’ll use when this one is replaced? But perhaps URLs and websites will seem very quaint and old-fashioned in 30 years’ time.

Anyway, over there, they tell you about some of its security features. Not all of them, of course – there is a much-speculated-about system — called, amusingly, iSIS — which supposedly allows genuine coins to be identified easily with a simple scanner, but nobody really seems to know yet how it works. Security, for the time being, through obscurity. It will be fun finding out its secrets in due course.

In the meantime, you have until October to spend your old ones…

Seal of (dis)approval?

We were on Scratby Beach in Norfolk today, soon after high tide.

It slopes away fairly steeply there, with the result that small waves were only breaking quite close to the shore. Apparently there’s some quite good surfing here at times, though.

To our surprise and delight, during the course of our short walk, three or four large seals swam in close enough to have a good look at what we were doing. I’m not sure they approved…

Seal at Scratby Beach

Thought for the day

In order to progress, modern society should be treating ruined entrepreneurs in the same way we honor dead soldiers, perhaps not with as much honor, but using the exact same logic. . . .

— Nassim Taleb

Conway’s Law

Somehow, I hadn’t come across Conway’s Law until today, despite the fact that Melvin Conway came up with it when I was still wearing nappies.

Conway’s Law states that:

Organizations which design systems are constrained to produce designs which are copies of the communication structures of these organizations.

Or, as it is often more briefly stated,

Any piece of software reflects the organizational structure that produced it.

If you’ve worked on software of any scale, you will know how true this is! Another nice form is:

If you have four groups working on a compiler, you’ll get a 4-pass compiler.

Brilliant stuff. More information on Conway’s Law and some of its corollaries here.

Waiting Room

Kirby Hall, Northamptonshire

Over the seas to Rye

Sunset over Rye Harbour Nature Reserve on Saturday evening

Holo – is it me you’re looking for?

20170306-151038537-900I got to have a good play with a Microsoft Hololens today. This is an augmented reality headset: you get to see your real-world surroundings, but with computer-generated overlays.

If you remember the holographic chess game in Star Wars, you’ve got the right idea, but the projections can be big and all around you, as well as small and on the table.

holochess

It’s a very clever combination of a bright, retina-projecting display, the Kinect 3D-sensing technology which builds up a map of the room, good accelerometers and supporting hardware so there’s no noticeable lag, all built into a computer that is comfortable to wear and requires no attached cables.

This isn’t primarily for games: imagine an architect walking around a building and being able to ‘see’ the pipes and wires behind the walls. A surgeon being able to walk around the 3D MRI scan of their patient and view it from different angles, possibly actually projected onto the patient’s body in the operating theatre. A remote technician being able to guide you through disassembling, fixing and reassembling some device, because they can see what you see, and point out things right in front of you… the possibilities are almost endless.

This is version 1.0, of course, and it has some limitations — it won’t work very well outside, for example, because of the brightness of the ambient light and the difficulty of capturing a good model of the surrounding world. It’s available in restricted quantities, for about three thousand pounds apiece. The projected images only cover a limited field of your view: they are good and clear when you’re looking at them, but you don’t see them in your peripheral vision. And there are some things for which a VR headset is clearly superior, especially if you want to replace your existing environment completely.

Despite all of this, it is great fun, and exceedingly well engineered, and the inclusion of the Kinect technology gives it a real edge over things like Google Glass, and gets rid of the problem of walking into walls and tripping over furniture that is an inconvenience of full VR headsets. Overall, it’s really quite impressive, and I predict that we’ll see quite a lot more of this in future.

The Flash of Weathercocks

Poetry is language at its most distilled and most powerful. — Rita Dove

A good friend of ours, Glen Cavaliero, is a poet. An exceedingly good one, in fact, and highly-regarded among the cognoscenti. Over the decades, in addition to his academic books, he has published numerous slim poetry volumes but, now approaching his ninetieth birthday, he wanted to gather them into a more substantial collection; not quite a ‘complete works’, but something of that ilk.

Glen, however, owns no technology more advanced than a typewriter, and so one of our side-projects over the last couple of years has been to help him with the process of self-publishing this 500-page masterpiece, which finally saw the light of day towards the end of 2016.

20161112-151352536-editIf you or any of your friends are seriously interested in good poetry, I recommend The Flash of Weathercocks. Some of the poems are dark and gritty, some light and cheery, some funny, some melancholy, some deeply thoughtful, some highly accessible, others filled with subtle literary allusions. Very few of them are easy reading. But all of them are expertly crafted by a master of the language.

You can find it in:

Now, I’ve learned a few things in this process. One is that poetry is much harder to typeset than prose: even trying to ensure that page-breaks come in sensible places in the middle of verses was quite a challenge for the publisher, but to add to this, for many of Glen’s pieces, the careful indentation of each line is important…

The other revelation for me was a clearer understanding of the effect Amazon has on the publishing world, especially the self-publishing world. I’m a huge fan of Amazon in general, but the margin they take on books is pretty severe! In our case, the publisher charges 15%, so when people buy from the publisher’s site, the author gets 85% of the cover price to offset against his or her up-front printing costs. That is all very reasonable.

Amazon, however, charges a further 60%, so the author gets 25%. Or, to put it another way, once you’ve established the printing costs, you need to set your cover price to four times that amount if you are just to break even on Amazon sales. Since poetry, by its very nature, tends to involve small print runs with a high per-unit cost, this would make the cover price prohibitive for Glen’s book. And so, in fact, we had to pick a cover price where he will lose money on every sale through Amazon, and make money if people buy from the publisher or directly from him.

I created a spreadsheet where we could estimate, for various values of X, that X times as many people are likely to buy from Amazon as from elsewhere, and settled on a price where he should just about break even overall. Our job now is to publicise the non-Amazon links as much as possible!

Above all, it’s clear to me that, even if you have tributes from the likes of Sir John Betjeman on your back cover, poetry is definitely something you create for love, rather than for money!

But I do think this is a significant work of literature, and since there’s no way I’m ever going to produce one of those myself, I’m delighted to have been at least instrumental in helping it come into existence!

Big Datum

This was in the Olden Days, when the Romans were top nation on account of their classical education…

— 1066 and All That

My curious mix of state and private education left me, to paraphrase Ben Jonson, with almost zero Latin and less Greek. Perhaps because of this, although I can be something of a language pedant, I would normally refer to, say, ‘the next item on the agenda’, and would only talk about ‘the next agendum’ in a spirit of playful fun. ‘Agendas’, however, would make me wince. I do know, deep down, that ‘agenda’ is a plural.

Similarly, even though I work with rather a large amount of data, I have almost never used the word ‘datum’ except in one of its specialist meanings. Indeed, for most science, if you have little enough data to think of each item individually, then you probably don’t have enough to draw useful conclusions!

And so, like most people, I think of data rather as a fluid substance, to be measured by the bucket-load — megabytes of data, like pints of milk or glasses of wine — rather than as a plural. Few people would say ‘there are a dozen data in this table’ unless they were classicists, who would never actually have to deal with it. So you’ll note that in the previous paragraph I said “if you have little enough data”. If I had instead opted for “if you have few enough data”, you would probably have assumed that I was making a point, one that wasn’t actually to do with the data at all.

Nonetheless, etymology has always intrigued me, and I love the fact that Norman Gray can write a long, sensible and interesting discussion of this very topic, which I can read over breakfast before going off to analyse a datum or two…

Fifteen and counting. Mmm. Talking of counting…

Status-Q is fifteen years old today. There have been times when I’ve done several posts in one day and others when long periods of silence have gone by. This last week, for example, my life has involved rather more ‘flu than inspiration. Sorry!

Status-Q has never been a high-traffic site, mostly because it’s random personal scribblings, rather than having a strong theme. I started it as a kind of diary and aide-memoire rather than anything else: other models of blog-writing weren’t plentiful at the time! The regular readership, as near as one can measure these things, is in the hundreds rather than thousands, and I find even that somewhat astonishing. But the wonder of search engines also means that some of my posts — especially ones dealing with technical problems — are found and commented on a decade or so after I posted them.

So I’m very grateful to those who keep reading and who send me encouraging messages, despite my inconsistency. Those of you who choose to receive it in your email inbox are particularly worthy of my respect and love!

Today, I’ll just leave you with this little mathematical proof that I found somewhere online, which should cause you some concern if, say, you plan to perform any financial transactions today, or travel in any form of transport that required engineering to build it. You’ll see that each step follows logically from the previous one, and the result is somewhat surprising.

If, on the other hand, you still feel safe riding your bicycle after reading this, please don’t post anything in the comments explaining why: that would spoil the fun! (I can provide a little enlightenment for those who email quentin@pobox.com, if wanted…)

When 2 become 1

© Copyright Quentin Stafford-Fraser