I have a little question about talents

What i understand of the rules is that you cant take the same talent twice , so why is it that in the core rule book,say you take assassin class.

You automaticle get the talent weapon mastery pistol solid projectile, what purpose does it have to take it again in the sell-steel talent tree for 100XP

Does it give you an extra advantage, if not why do they include it in the sell-steel (assassin tree) if it has no purpose at all.

IIRC, in all of the 40K RPG lines, the first rank tree of each career includes all talents and skills available to that character, including the ones they receive automatically for free.

I'm not exactly sure why, but my guess is, this for those who take (or make) alternate ranks or home-brew careers, to give an idea of appropriate costs, etc. But that's just my guess.

Hope that helps.

thx for the quick response