I'm someone with no football playing or coaching experience, unless you count my time as a ten-year-old outside linebacker in 1992 (we went 1-5). But over the past several years I've been trying to learn a lot of football-scheme basics. Since this is a Michigan-based learning process, I've read a lot about the 4-3 under and the 3-3-5 and what works or doesn't because of alignment or personnel or PHYSICALITY or angry gods. Here's my question to coaching strategy types: assume you are a coaching master of every alignment. You're in a Rawlsian situation where you're going to be given a team to run but you don't know what your talent is going to be like or what your league competition is. Is there any particular alignment that you'd start with defensively? Would the 4-3 be the default setup given the average distribution of size/athletic ability in the general football population? I ask because it seems like you hear a lot about "pick a philosophy and stick with it." and we've all seen what happens when you don't stick with it. But what comes before sticking with it? Is it really just the coin flip of what you came up through the ranks learning?