[thejeff]

Apparently I was misled by comments from the devs. The game is complex enough, not even they understand it anymore.

I'm not entirely convinced by the (correct) Monty Hall argument.
Largely because of the terrain modifiers. Provinces with multiple sites are more likely to be in terrain with better chances and thus may still have a better chance of more.
Waste with 2 sites or farmland with none?

More importantly, I really care less about the order they're searched in. I don't want to have to come back and check for skipped provinces once the autosearching is done. Once that's hashed out, tweaking for the most efficient order would be appreciated, but I won't really care.