I have not come up with anything original. It needs a better brain than mine! I have done what I can do in taking Dawkins' idea and extending it.

All things considered, I can see no reason to adopt the afterlife hypothesis. I am sure I shall remain in a minority for a long time to come, especially among experiencers, but for me the evidence and the arguments are overwhelming ... We are biological organisms, evolved in fascinating ways for no purpose at all and with no end in mind. We are simply here and this is how it is. I have no self and "I" own nothing. There is no one to die. There is just this moment, and now this, and now this.

In proportion to our body mass, our brain is three times as large as that of our nearest relatives. This huge organ is dangerous and painful to give birth to, expensive to build and, in a resting human, uses about 20 per cent of the body's energy even though it is just 2 per cent of the body's weight. There must be some reason for all this evolutionary expense.

'Temes' [technology-enhanced memes] don't care about us - they simply want to create more of themselves. Don't think we created the internet for our own benefit - think about temes spreading for themselves because they must.

For the planet's sake, I hope we have bird flu or some other thing that will reduce the population, because otherwise we're doomed.

Finally, we might decide that civilisation itself is worth preserving. In that case we have to work out what to save and which people would be needed in a drastically reduced population - weighing the value of scientists and musicians against that of politicians, for example...

Just as the design of our bodies can be understood only in terms of natural selection, so the design of our minds can be understood only in terms of memetic selection.