[Joel007]

Although Corran had a reputation for hunches and reflex before that.
I remember in Jedi Search or one of that trilogy when Luke finds 2 ways of determining if someone is force sensetive. A technological one which the Emperor had made, and a certain part of the subconcious mind which gives a force push reflex if probed.

Given that they usually say the force has a purpose it wants to get done, that would explain why people are thrust into circumstances which end up with them becoming force users.