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.

So long, and thanks for all the fish.

Time, we know, is relative. You can travel light years through the stars and back, and if you do it at the speed of light then, when you return, you may have aged mere seconds while your twin brother or sister will have aged twenty, thirty, forty or however many years it is, depending on how far you traveled. This will come to you as a profound shock, particularly if you didn't know you had a twin brother or sister.

Yes, I think I use the term radical rather loosely, just for emphasis. If you describe yourself as atheist some people will say, Don't you mean agnostic? I have to reply that I really do mean atheist, I really do not believe that there is a god; in fact, I am convinced that there is not a god (a subtle difference). I see not a shred of evidence to suggest that there is one...etc., etc. It's easier to say that I am a radical atheist, just to signal that I really mean it, have thought about it a great deal and that it's an opinion I hold seriously.

One is never alone with a rubber duck.

Cyberspace is - or can be - a good, friendly and egalitarian place to meet.

The future of computer power is pure simplicity.