Somebody Else's Problem field

(via BoingBoing)

Dinotopia artist James Gurney posted this video about a "change blindness" experiment. 75% of the participants didn't notice that the experimenter who bent under a counter was replaced by a different person. Says Gurney: "Here's proof that most of the time we look but don't see." I think Matisse said something to the effect that he didn't really see things unless he was painting them.

I feel the only way to actually get to know a place is on your bike. You learn the contours and features of the land much better that way.

It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle. ~Ernest Hemingway

This also reminds me of a feature described in the Hitchhiker's Guide to the Galaxy. Here's a snippet from the book:

The second strangest thing about the ship was watching the Somebody Else's Problem field at work. They could now clearly see the ship for what it was simply because they knew it was there. It was quite apparent, however, that nobody else could. This wasn't because it was actually invisible or anything hyper-impossible like that. The technology involved in making anything invisible is so infinitely complex that nine hundred and ninety-nine thousand million, nine hundred and ninety-nine million, nine hundred and ninety-nine thousand, nine hundred and ninety-nine times out of a billion it is much simpler and more effective just to take the thing away and do without it. The ultra-famous sciento-magician Effrafax of Wug once bet his life that, given a year, he could render the great megamountain Magramal entirely invisible.

Having spent most of the year jiggling around with immense LuxO-Valves and Refracto-Nullifiers and Spectrum-Bypass-O-Matics, he realized, with nine hours to go, that he wasn't going to make it.

So, he and his friends, and his friends' friends, and his friends' friends' friends, and his friends' friends' friends' friends, and some rather less good friends of theirs who happened to own a major stellar trucking company, put in what now is widely recognized as being the hardest night's work in history, and, sure enough, on the following day, Magramal was no longer visible. Effrafax lost his bet - and therefore his life - simply because some pedantic adjudicating official noticed (a) that when walking around the area that Magramal ought to be he didn't trip over or break his nose on anything, and (b) a suspicious-looking extra moon.

The Somebody Else's Problem field is much simpler and more effective, and what's more can be run for over a hundred years on a single torch battery. This is because it relies on people's natural disposition not to see anything they don't want to, weren't expecting, or can't explain. If Effrafax had painted the mountain pink and erected a cheap and simple Somebody Else's Problem field on it, then people would have walked past the mountain, round it, even over it, and simply never have noticed that the thing was there.

And this is precisely what was happening with Slartibartfast's ship. It wasn't pink, but if it had been, that would have been the least of its visual problems and people were simply ignoring it like anything.