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Things 66: ChatRoulette piano, Tube Door Challenge, Free Will

(Originally sent March 2010, maybe)

Video
ChatRoulette is a fascinating site whose mission is simply to connect you to a random person to video chat with. This is just as good and bad an idea as it sounds. I don’t recommend visiting (particularly if you have a webcam active as it will attempt to throw you into a random encounter immediately) but I do recommend reading about it.

It turns out to be a great environment for improv performance as shown in this video (sound essential, 5’28” long but the first 40” gives you the idea):

I’m fascinated by the extent to which people respond silently – and contrast this with how we usually provide feedback to a musical performance. There’s some very interesting human-machine-human interface stuff going on here.

Link
Sometimes an aesthetic is a byproduct of technology – high contrast in over-reproduced 6”x10” glossy star photos, inconsistent speed in old black and white film, the depth and colour range in Polaroid photos, or the way 80s TV series look rubbish. Digital processing grants a whole new level of control over colour and the ability to choose from a vast range of possible palettes, but the result seems to be that everyone is doing the same thing. This is quite likely how films made in the last ten years will reveal their age when we look back on them ten years from now.

Quote
(via Tim Connor)

Marin Alsop: “Tradition is simply the last bad idea”

Picture
Free Will
.

This weeks’ puzzle
Many years ago Nick challenged me to work out how to tell where the doors of a London Underground tube carriage would stop on the platform so that you could optimise where to stand to improve your odds of boarding first and so getting a seat. I came up with an answer that didn’t work terribly well but assumed that was what he had in mind (without ever confirming it). Only now after 5 months of catching 4 tube trains every workday have I realised a much better solution.

What do you think my first and second solutions were?

Last week’s puzzle
Why are calculator and phone keyboards laid out oppositely? There doesn’t seem to be a definitive answer, but there are a few very likely suspects.

The original decisions that led to 123 being at the bottom for calculators are unclear. Thomas suggests it’s a matter of “where your attention is coming from” – combined with Benford’s law I suspect this could be a key factor driving the layout of the first common mechanical number-entering devices, cash registers, and how devices evolved from there.

When it came to phone pads, it seems (remarkably for this kind of thing) that AT&T actually did some user testing and found the 3×3 grid with 123-at-the-top was the easiest for people to master. As letters were also a consideration in those days, putting ABC with 1 (and so on) made most intuitive sense, and would have looked pretty bizarre had 123 been at the bottom.

My preferred write-up of possible answers comes from The Straight Dope.

Various other attempts to answer this question are curated here.

Richard also points out the following (my summary of his words [my comments in square brackets]):

Handedness is a consideration for other aspects of the layout; in particular computer keyboard number keypads, which sit on the right-hand side, are supposed to be operated with the left hand [a revelation to me after years of feeling slightly odd using my little finger to press the return key], and an interesting challenge emerges when one keyboard is used for both data-entry/calculation and telephone operation, as with Skype today, or the over-prescient One-Per-Desk in 1984.

Categories
Old

Things 49: Galaxy Rising, Tube Time Visualisation, Back Flip Variation

(Originally sent May 2009)

Video
Time lapse of the stars at night – be sure to watch to the end to see the Milky Way rising:

Galactic Center of Milky Way Rises over Texas Star Party from William Castleman on Vimeo.

Link
A simplistic but interesting data visualisation showing travel times from and to different parts of the tube network – this explains why everything in London seems to be about 30 minutes away:

Quote
In a self-consciously long and disappointingly poorly argued article titled “In Defence of Distraction“, the following quote made reading it all worthwhile:

“Priorities are like arms: If you have more than two of them, they’re probably make-believe” – Merlin Mann

Picture
An animated gif (2MB) showing a fantastic variation on a back flip.

Puzzle: Newspaper eyeball value
We often hear that newspapers are in terminal decline and it’s all the internet’s fault. But much of a newspaper’s revenue comes from advertising, and many have created their own ad-supported websites, and many of these websites reach very large numbers of people. So they are losing eyeballs looking at print and gaining eyeballs looking at a screen, both of which will also see adverts. Why isn’t this helping?

(Perhaps more than other puzzles I have set in the past, there are many possible answers. Don’t hedge your bets – if you have multiple solutions, put them in order of importance! I’ll summarise the results and stick my own oar in next week.)

Categories
Old

Things 18: Layton Squares, Lesson Learned, IWIWAL

(Originally sent June 2008)

This week’s films – one line reviews
The Happening was a huge disappointment, anticlimactic in every way.
(My review: http://uk.youtube.com/watch?v=_Mpa9ViwoMg)

The Incredible Hulk was impressive yet strangely forgettable.
(My review: http://uk.youtube.com/watch?v=ltWgo9TXvKk)

Next Week’s film
Wanted
. It looks like the standard Hero’s journey (ordinary guy discovers he is in fact the son of the world’s best assassin and must take up his mantle to protect Fate itself!!) with a great cast. This is my personal most anticipated movie of the year, since it is directed by Timur Bekmambetov, who directed my favourite movie of last year, Day Watch. He has an amazing talent for making the incredible look plausible, yet still awesome. I am seeing this at the first possible opportunity.

Fantastic teaser trailer featuring a single illustrative fragment of the film:
http://uk.youtube.com/watch?v=oTRh66yvYpc [Video removed – this short teaser kind of does the job though – Tim 23/8/2010]

If that’s not enough for you, here’s the full trailer which probably has most of the awesome stuff in it.
IMDb rating
: 7.8/10
Rotten Tomatoes rating: n/a (It’s not being shown to critics?!) [Currently 71% – Tim 23/8/2010]

A Puzzle
In answer to last week’s “what comes next”: heaven.

This week: Professor Layton and the curious village is a puzzle game for the Nintendo DS, and my favourite puzzle in it is number 100. The challenge is to work out how to loop seven elastic bands around the pins in the board so that each one is held in the shape of a square, and no pin is used as a corner twice:

A Quote
Another baffling moment from my friend Nick:

Nick: Have you heard of the psychologist, Wasslavich?
Tim: No…
Nick: Neither have I.

A Link
A lesson is learned but the damage is irreversible is the name of the webcomic, and each strip generally follows that theme and stands alone. It’s also mindblowingly insane and creative and I can’t just link to a single strip. So, depending on which opening line you like the most, take your pick:

“Dale, I owe the legendary ghosts of mafia bosses $80,000!”
http://www.alessonislearned.com/index.php?comic=20

“Caroline’s doppelganger is crying again.”
http://www.alessonislearned.com/index.php?comic=37

“The universe was so ashamed that you slept late, it is shrivelling into a raisin.”
http://www.alessonislearned.com/index.php?comic=31

A video
I can’t understand why I haven’t linked to this video before. It’s an excellent example of the “Anime Music Video” (AMV) format, in which scenes from anime are ingeniously edited to create a video for a song, in this case the brilliant “I wish I was a lesbian”:

A picture
The surprisingly rarely seen true scale version of the London underground. The stylised version we are familiar with is actually an incredible triumph of marketing that turned around the fortunes of the tube.

Categories
New

Things 78: Nuclear, BODMAS, Curvy tube map

Video
While not perhaps the best way to view the data (using time to represent time always feels strangely inefficient, although it’s difficult when you also want to present geographical data), this video might nonetheless be a good way to actually take in the data:

Quote
John Hodgman “A stopped clock is correct twice a day, but a sundial can be used to stab someone, even at nighttime.”

Puzzle
I’m sometimes called upon to help people with their children’s maths homework, and I found this problem particularly hard.

The solving method is explained as follows:

When you are working out a sum with more than one operation (eg 8 + 2 x 3), follow the BODMAS rule. Without these rules you could have more than one right answer, so getting the order of operation correct is important. You should calculate in this order;
Brackets
Order (powers/square numbers)
Division
Multiplication
Addition
Subtraction

The first problem in the ‘level 1’ set of problems is simply this:

2 + 4 — 3 + 5

What answer would earn you a tick from the teacher?

You can see the original problem sheet here, and the level 2 and level 3 problems here.

Picture
This curvy tube map is rather nice (although the full-size version doesn’t seem to be available any more):

Some of you may recall the scale tube map from Things 18.

Last Week’s Puzzle
Last week I asked about Trigger’s Broom (also known as the Ship of Theseus problem): the broom has had both head and handle replaced many times, so we might ask “Is Trigger’s broom still the same broom? If so why, if not why not?” This question has stimulated debate and discussion for centuries and Things recipients were no exception. I’m going to paraphrase people’s responses here to prevent this issue of Things becoming even longer.

Both John and Laurence point out that the Sugababes present a similar problem (as does the Wikipedia article, which is an excellent starting point for anyone that has not delved into this subject before)(naturally “as does” could refer to both “point out” and “present a similar problem”).

Thomas makes the distinction “There are two questions: “Is it the same?” and “Is it the same broom?”,” pointing out that the former question is trivial, but for the latter “we don’t insist on new labels, new identities for every subtle change in an object … so things like the functions it performs and who possess it as better ways to identify them”.

Laurence counters “what if these heads/handles were replaced when they started to show wear, but were still functioning. If I rescue Head_1 and Handle_1 from the bin at different times and join them, what do I have?”

As Angela noted in her original setting of the question: “based on the fact that none of the cells in your body now are the same as they were when you were born, are you actually you??”

This was touched on in the puzzle from Things 41 (yet to appear in blog form), which went:

A famous bit of trivia that has been passed around for years holds that over the course of 7 years, every cell in your body will have been replaced with a new one. Are there any simple ways to disprove this?

To which there are some interesting answers.

Without diving down that rabbit hole too deeply, I first note my original answer to Angela on the personal identity issues raised by Trigger’s Broom:

Identity is a convenient fiction that we are hard-wired to believe in.

Second, I highly recommend making time for this cartoon which sheds some light on the subject, which I saw many years ago and Laurence managed to find on YouTube:

http://www.youtube.com/watch?v=pdxucpPq6Lc

A famous bit of trivia that has been passed around for years holds that over the course of 7 years, every cell in your body will have been replaced with a new one. Are there any simple ways to disprove this?