go back and watch the pilot, then season 5 episode 8. crazy to see the evolution of walter from start to beginning.
you guys also notice how the process (setting up and action) of killing the men in the prison took only about 5 minutes of the episode because walter is obviously full Heisenberg now. A scene like this would have taken half an episode in earlier seasons just because of walter's moral obligations.
makes you wonder if its walter or heisenberg that is the true disguise
The transformation is really there. You can see how much moral dilemma Walter had after killing that drug dealer by tying the one guy up in the basement. He was so gullible that he almost released him. Now, killing anyone is really just another day in the life for Walter. But honestly, what can you expect from the man, I mean if you were in the situation of constantly dealing with such risky business you would ultimately either be dead or you would harden yourself and deal with the harsh reality of things. In essence, the drug world that Walter has basically metaphorically drowned himself in, has in turn changed him. This was a change that was necessary to go against people like Tuco and Gus.
Also, I have to say that I dislike how season 5 started off. Clearly, we see how Walter ends up because basically the whole season is a flashback. Right in the first episode of season 5 we see Walter going into a diner and doing that traditional birthday age on his breakfast. He puts 52 on the plate by himself. As we watch the season we see that Skylar does that on his 51st birthday. So we can safely assume through watching the part of the season and that flash-forward scene in the diner, that ultimately Walter will have to call that guy and get a completely new identity due to Hank investigating him or something.