A learning experience is one of those things that says, 'You know that thing you just did? Don't do that.

He spent a lot of time flying. He learnt to communicate with birds and discovered that their conversation was fantastically boring. It was all to do with wind speed, wing spans, power-to-weight ratios and a fair bit about berries. Unfortunately, he discovered, once you have learnt birdspeak you quickly come to realize that the air is full of it the whole time, just inane bird chatter. There is no getting away from it.

My universe is my eyes and my ears. Anything else is hearsay.

And the most interesting natural structure? A giant, two-thousand-mile-long fish in orbit around Jupiter, according to a reliable report in the Weekly World News. The photograph was very convincing, and I'm only surprised that more-reputable journals like New Scientist, or even just The Sun, haven't followed up with more details. We should be told.

My favorite piece of information is that Branwell Brontë, brother of Emily and Charlotte, died standing up leaning against a mantelpiece, in order to prove it could be done. This is not quite true, in fact. My absolute favorite piece of information is the fact that young sloths are so inept that they frequently grab their own arms and legs instead of tree limbs, and fall out of trees.

A computer chatted to itself in alarm as it noticed an airlock open and close itself for no apparent reason. This was because Reason was in fact out to lunch.

When you're cruising down the road in the fast lane and you lazily sail past a few hard-driving cars and are feeling pretty pleased with yourself and then accidently change down from fourth to first instead of third thus making your engine leap out of your hood in a rather ugly mess, it tends to throw you off stride in much the same way that this remark threw Ford Prefect off his.