[The Afterborn] A couple of questions

[Lukas]

I have a couple of questions about Jonathan Walton's The Afterborn. First, is there any particular reason why all the characters start with at least Sharp+1? I don't really see any justification in the material for it. Second, what does the advance "You get suffer harm" mean? It seems like you get the "suffer physical/emotional harm" moves from the getgo, so does this simply mean that you start taking harm like an adult character? Third, if you change to a new playbook without taking all of the "get Stat+1" advances, at what level do the unaccounted-for stats start?