Why so much INT?

[Sirius Black]

According to the Stat calculator Thiefs have pretty good INT (equal to a Red Mage) my question is this:

1. If INT only effects Black Magic power... Why the fuck do Thieves have so much of it? What's the point of giving a character with 0 MP such high Mlack Magic strength?

Thanks

[Jei]

just a guess... maybe it helps with lock picking....

that's the only thing that sounds like requiring some brain.... ^^; for THF...

[Sirius Black]

I guess it could help those kind of skills somehow??? I think it's weird though his INT stays even with the Red Mage and the Dark Knight, and both of them (obviously) have a purpose for it.