Obviously you still need to make good shots, the bowlers accuracy does play a part of it, but it doesn't matter how well you throw it if the physics going on aren't working.
I'm getting the feeling alot of what is getting argued is words. You can stand on the lanes, have a perfect release with perfect timing, and all of that good stuff and it all doesn't matter if something between point A and point B has changed with the physics of it.
I get what you are saying Gizmo, lots of things can change that the bowler himself just simply can't see or feel that can change the physics side. Most of the list would sound like some crazy excuse list and we would all point and laugh at anyone that tried to use it as an excuse. Mathematically speaking though, any slight change does change the sum and could possibly change the outcome.
I see it really as two different things, all that stuff we do before the ball hits the lane ( for me thats the actual shot) and then everything else. The most accurate bowler we know of is that robot they use to test balls. It throws a perfect " shot " indefinitely, however it doesn't adjust for the physics part of it therefore it can't throw a perfect game.
I may be wrong but I'm guessing that is what you are arguing Gizmo. You could have someone that could replicate the same footwork, timing, release, and hit the same spot every single time but they still won't always strike. We as bowlers are really doing two different things at the same time, trying to replicate prefection and adjusting for the physics involved. We are human so generally its the first part that causes the problem, but on occasion the physics will get in the way.