However, sometimes you need to forgo Logic to obtain its expert level earlier (I'm talking about the problem of predicting skill progression and identifying skill trees). It's quite a paradox. Of course, you should definitely take Logic if it's offered after upgrading some skill to expert and there are no other skills available, but upgrading only one skill to expert is risky due to the next level-up, which might involve skills like scouting + alertness.

Added 52 minutes later
You can read more about it here (in English).