There was a scene where we knew we were going to kill Tortuga, and Vince said he just had this image that Hank looks through his binoculars and he sees just the top of this guy's head moving through the grass. Then someone else said, "What if he's moving through the grass because his head is on top of a turtle?" Then somebody else said, "What if when they find this decapitated head on top of the turtle it blows up because there's a grenade inside?" So each person is adding to the story, and you're watching as somebody tells you this great story. And you tell it over and over and over again until everybody feels rock solid with it.
Peter Gould on the writing team's process behind formulating the infamous Tortuga scene in Breaking Bad Season 2 (x)
Just laughing so hard...the logic going on in these folks' heads!
Also he talks a little about starting up things as the showrunner for Better Call Saul. Cool interview!