If you took a couple of David Bowies and stuck one of the David Bowies on the top of the other David Bowie, then attached another David Bowie to the end of each of the arms of the upper of the first two David Bowies and wrapped the whole business up in a dirty beach robe you would then have something which didn't exactly look like John Watson, but which those who knew him would find hauntingly familiar.

Grown men, he told himself, in flat contradiction of centuries of accumulated evidence about the way grown men behave, do not behave like this.

Imagine" he said, "never even thinking, 'We are alone,' simply because it has never occurred to you to think that there's any other way to be.

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.

The problem is, or rather one of the problems, for there are many, a sizeable proportion of which are continually clogging up the civil, commercial, and criminal courts in all areas of the Galaxy, and especially, where possible, the more corrupt ones, this. The previous sentence makes sense. That is not the problem. This is: Change. Read it through again and you'll get it.

You turn the computer into the storyteller and the player into the audience, like in the old days when the storyteller would actually respond to the audience, rather than just having the audience respond to the storyteller. I had an enormous amount of fun, actually, working on that.

He shifted his weight from foot to foot, but it was equally uncomfortable on each.