The evidence is unclear. There's research on both sides.

We're not saying law enforcement should not be a part of the solution; we are saying it should not be the solution. We welcome law enforcement as partners.

The policies apparently are working. We have stronger enforcement and the message about bringing guns to schools is getting through.

The reason why the audit was done is basically to learn more about what is going on and to correct mistakes. The state basically agreed that there were some problems and that they were going to fix it.

We sent a team to the West Coast to meet with [Digital Research], but they weren't interested in working with us.

As we parted at the Natural History Museum in London, I asked Richard Fortey how science ensures that when one person goes there's someone ready to take his place.

He chuckled rather heartily at my naiveté. 'I'm afraid it's not as if we have substitutes sitting on the bench somewhere waiting to be called in to play. When a specialist retires or, even more unfortunately, dies, that can bring a stop to things in that field, sometimes for a very long while.'

And I suppose that's why you value someone who spends forty-two years studying a single species of plant, even if it doesn't produce anything terribly new?'

'Precisely,' he said, 'precisely.' And he really seemed to mean it.