[bobbybanaduck]

"on or beyond" reads to me to be in the vicinity of 1st or 3rd base. by your logic, any ball that lands 90.0000000000000000000000000001 feet from home plate is irrevocably fair, yes? if so, then you contradicted yourself in agreeing that the ball in my diagram would be fair, because that point is more than 90 feet from the plate. i wasn't disregarding the criteria posted, i was assuming that we all knew that one. but i assumed too much because of my read of the rule, which i stated in the opening.

you're read of the diagram is correct. the ball lands where the break in the two lines is. the lines are actually 2 different colors, but they didn't come out looking very different.