You have to understand that the Flash is a fictional man. The concept of the Flash was made purely for entertainment. A man that can run and move so fast that he appears as a blur. If he vibrates at the same frequency as the molecules in a wall, he can pass right through a wall. I think the show is much more entertaining than your average cop drama.
I guess you both are right! I think I expected too much from a show that is purely science-fiction. Still, it's kind of weird to see them try to explain stuff that happens in scientific terms.Well, film is just fiction thus they can't rapresent the reality as it is. Moreover they must make it interesting and exciting to watch since they have to make some profit in order to cover the costs.