Water cannon Range modifier

Your "high degree of certainty" is just a "margin of error". ;-)

When we have unknown qualities, such as distance modifiers, an experimental maximum can be attributed to some other quality, such as AM modifiers. Without knowing to a "high degree of certainty" the quantity of the first, attributing a max to the second creates a greater margin of error, or a "lesser degree of certainty".

if my math teacher said, Add the results of problem one with problem two, and we had: problem one: .6 (which we round to 1) problem two: .6 (which we round to 1)

we have for problem three 1 + 1 = 2 but the reality of that is we have .6 + .6 = 1.2 which rounds to 1. 2 may have been the correct answer, but 1 is the answer that better fits reality.