Well no duh, they CAN, but how often does that transfer over to something useful? Sure, the precision might help some professions, but it's not nearly as effective as actual experience in the real thing. Also, all the reflexs are being trained on artificial stimuli, which although it might make your brain respond .0005 seconds faster, it doesn't train your brain what to do when in the context of real life. In addition, studies have shown that Brain Academy and other supposed IQ increasing games don't really increase your intellectual prowess, just more of the above reflexes.

But despite all that, I think I will have to scale my previous claim back a bit. Sure, they can teach us something, but it simply cannont compare with real life experience. There's still an endless basketfull of things that video games can't provide for people. For instance, they can't teach you how to get a girlfriend, or even something as simple as how to make solid friends.