Still the authors didn't finish from using the ricin thing to their favors yet… It should be fitted somewhere down the chain of events sooner or later, which use can be either intentional or indadvertedly … The .38 snub would eventually be used much later… Again two key-points (probably left unthought of by the…

If that girlfriend's boy finds Jesse's cigarette box with the "wrongly" flipped cigarette, tries to rectify the issue, Then, while Jesse is in not watching… It would be that Jesse, in some moment of irratation or inattention, needs a smoke, then what? Maybe this would be staged near the end of Season 4? Walt might…