Darth Roxor said:
I think we can all agree that C&C doesn't exist.
Meaningful Choices and Consequence do exist as alternative routes through the game, Devil Survivor-style. The Witcher 2 doesn't seem to live up to that since, from what I've heard, there are no alternative routes through Act 3, only through Act 2, but it's still a major progress compared to other western RPGs. (That's the only positive thing I can say about it, really, as I quit the game midway through Act 2 out of boredom.)
Another example of meaningful C&C is fucking up your build or item management and not being able to finish the game / getting a bad ending, which encourages you to approach the gameplay more thoughtfully next time. Dunno if that applies to the Witcher 2, probably not.
Yet another, less meaningful but still nice example is the skills you've invested in impacting the gameplay style needed to beat the game and closing off some routes / quests / outcomes. Think Darklands or (hopefully) Age of Decadence. On the other hand, this probably belongs not to C&C but to multiple quest solutions. Again, if your character isn't good at anything (i.e., if you've fucked up your character build), that should prevent you from getting the good ending / beating the game.
tl;dr dunno why I'm posting this