âIt is known that there are an infinte number of worlds, simply because there is an infinite amount of space for them to be in. However, not every one of them is inhabited. Any finite number divided by infinity is as near nothing as makes no odds, so the average population of all the planets in the Universe can be said to be zero. From this it follows that the population of the whole Universe is also zero, and that any people you may meet from time to time are merely products of a deranged imagination.â
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I just picked up his last book at lunch.
All planets are habitable. It is enough to bring down the price of rents!
Think of a number between 1 and infinity. Then randomly choose another number between 1 and infinity. It is overwhelmingly likely (indistinguishable from certainty) that the randomly chosen number will be greater than the number you chose.
This tells a bit about the nature of infinity and the difference between random and arbitrary. It's also, I think, a reductio ad absurdum to fine-tuning cosmological arguments.