Could there be a real life Walter White?
My middle school chemistry teacher was asked that same question back when the show was first out. He said that he didn't think that would be likely but his reasoning was because chemists as smart as Walter wouldn't do evil things or get involved in meth.
Now that I'm older I honestly feel like there are and has been people like Walter. But certainly there are scientist and chemists that have used their intellectual expertise for bad things. Such as the nuclear bomb but that's a whole other thing.
But would it be likely that an incredible Chemist like Walter White could exist among society and be making narcotics like crystal meth?