Well i've wondered all my adult life about this phenomenon and to be honest, I just don't get it. Yes I do see yours Wire.1, and others' examples, but it seems if these are actual in occurrance, there would be more random examples of both sides, but perhaps that is where I go astray, thinking I should see some evidence of disorder moving towards order i.e. open my tackle box just once, and find it all straight! (to put a bit of humor in)
Thanx for your (and others) time in this quest of mine, I definitely have a better "grip" now thanx to it, and I do believe it is healthy to wonder, and question the world around me.
Cheers, and Best Regards, MoonDog