It's probably a good thing Daniel is distracted, because at the mention of archaeology, the Doctor looks politely interested at best, and definitely unimpressed. Unless it's Indiana Jones style archaeology. Which is usually isn't. There are only a few people whose style of archaeology actually interests him - which hey, he wonders how Benny's doing these days. It's been a while since he's bumped into her. Probably because she's been hanging out with the Doctor's brother, and while he loves to meet up with Brax every now and then, he'd prefer to know very little of his actual affairs. Actually, when was the last time he met Benny? The Christmas party at his brother's collection? Probably.

The next two on the list grabs his attention a bit more, however. Philology is definitely an interesting subject, especially when you can go back in time and visit the people speaking whichever language. No such thing as a dead language then. And anthropology, well, that's the Doctor's life in a nutshell, isn't it? Certainly a solid portion of it.

"Oh, all of those," he says, in reply to the 'what'. "And a few more to start. And just 'the Doctor' will do. Do like Theta's shape? It's quite an appreciable blend of creatures, isn't it? I've appeared that way a few times myself. Of course, she is me, so that's hardly surprising. We had something quite like them on my planet, though not exactly, of course. A bit like myself, naturally." A main difference being of course that while Theta's shape is peculiar, it's still reasonably mundane in appearance, unlike what is contained inside.