^ Yup
To be honest, the whole series since day one has been character 'development'. Not saying btrilla doesn't know what that means, but overall it was intended to show how Walt White, mild-mannered and underpaid high school chem teacher turns into: Walt White, monster (as Bro-in-law stated tonight).
From season 1-5, you can see how Walt changes through all of his experiences in dealing with dealers, 'distributors', criminals, etc. It isn't just him though, it includes his family. The whole show does a great job at showing how he puts up walls between himself and EVERYONE he cares about (Note how the cancer is no longer even a main issue with Walt and his decisions or choices now). Just like the Godfather scene where Michael Corleone closes the door on his wife at the end of the movie, Walt pretty much does the same to everyone else he is close to. He pushed his friends, family, and business associates away. He went from calm, cool, and logical to irrational, anxious, and 'stupid' (I mean that in the most non-stupid, still genius, sorta way).
I have a good feeling what to expect for the next season as it has been built up pretty well throughout the series. While Walt seems to have realized what a monster he has become, even reconciling with Jesse, as ninedot said, he's reached the breaking point. He tried his best to keep a clean sheet and for the most part, really did cover all the angles coming at him. BUT, like the greatest criminals of our non-fictional existence, they always make a simple mistake. Walt's wife foreshadowed it earlier in an earlier season: "The devil is in the details". Now, Hank is gonna have W.W. in his X-Hairs and as fans of the show know, once Hank finds a reason to suspect, he doesn't let up until well...its over.
Next season (or part 2 of 5th season) is gonna be pretty wicked to watch. Hate how good TV has to stop....stupid human beings being humans :|
