I hope very much that you don't give a horse cause to get rid of you, as you shouldn't fall off of one otherwise.

[Oh Dave. But Dorian is interested in the subject, the terms reinforcing what he has read. But when Dave asks about his studies, he shrugs.] Oh, I'm doing the Old Tripos—[At a glance at Dave, he clarifies]—mathematics. I started in Divinity but changed my mind. Is Mr Darwin's work so widely accepted as that? He would be delighted. I love that you term it the Butterfly Effect, it is such a wonderfully evocative name.