Congratulate me! I'm finally reading Discworld!

Aye, and it involves a dark, damp, deep place as well.

How so? It did seem a little forced, but it didn’t seem inconsistent with the way wizards or Vetinari had acted previously.

I can see where Frank is coming from. Vetinari’s driving motivation has always been securing the future of the city. Pretty much everything he does furthers that goal. His actions in Unseen Academicals are pretty much pure altruism, which is something he’s never exhibited before. The same goes for the Wizards, except even more so. They’ve never really given a shit about anything that happens outside the walls of Unseen University, unless it involved some sort of cosmic threat. Both parties stuck their neck out extraordinarily far for Mr. Nutt, and for no apparent gain for themselves.

Whatever you say about Unseen Academicals, it has Dr. Hix.