One of the things which always surprises me is the various permutations of the burger that exist. I pondered at one point the success of Five Guys. And if someone pitched to me as an imaginary investor a newcomer to the field would I buy into it. I had thought my answer being "no, that I can't imagine another variation of a burger being successful". But man there's still so much of a parameter space with permutations and combinations I could not imagine myself that there could still be success in other burger variations. The Habit, The Counter, Five Guys, Smashburger, ... (sure I'm leaving some out). Wow, it's been like a burger Renaissance, who'd have thought.