`Care to expand?'

`In short, sir, more people will die in wars, far fewer will die of disease and medical problems of all kinds. And humanity survives the snowball. The first humans left the planet in converted weapons of war, sir.'

`That's monkeys for you, Stibbons,' said Ridcully. He looked up at the cloud of pure Auditor.

`No, we're not ashamed,' he said. `Humans get a chance to go on.' `They won't have earned it!'

`Strange that this concerns you,' said Ridcully.

`Do you know the terrors that will confront them?' the Auditor demanded. `And the terrors that they will bring with them?'

`No, but I doubt if they're worse that the ones they've met already,' said Ridcully. `Anyway, you don't care about them. You just want them to die quietly. Don't you?'

The Auditor shimmered. Ponder wondered how many Auditors had come together to create it. It seemed, now, to be hesitant, unsure It said: `I want ... I ... '

... and exploded into fog which, itself, faded away.

`Not learned quite enough, then,' said Ridcully, and sniffed. `Well, let's send Darwin back and go home, shall we? I'm sure we've missed at least one meal. Where's• Rincewind?'

+++ Hiding in the Minerals Gallery +++ said Hex.

`Impressive. I didn't even see him move. Oh well, I dare say you can pick him up later. Let's go.'

`What did it mean by the terrors they bring with them?' said the Dean.

`Well, they're still monkeys,' said Ridcully. `Still screaming at one another, trailing all that evolution behind them, wherever they go.' `Darwin said something like that, sir. In The Descent of Man,' said Ponder.

`Good chap, Darwin,' said Ridcully. `Would have made a good wizard.'

`Did you know they put his statue in the canteen, sir?' said Ponder, a little shocked.

`Did they? Good idea,' said Ridcully brusquely. `That way, every sensible person sees it. Ready, Hex.'

And the Central Hall was empty again, apart from the fossils.

Charles Darwin awoke. For a moment so brief that a blink ended it, there was a sense of complete disorientation. But then he sat up, feeling unaccountably exhilarated, and looked around at the tangled, busy bank, with its birds and flitting insects, and thought: Yes. That's right. That's how it is.

AFTERTHOUGHT

The Darwin family motto: cave et aude.

Watch, and listen.