Thanks Jason. What you say below is 100 percent correctomundo ! We can get into quite a bit more of this stuff too if we want to. It's kind of neat stuff really IMHO. Cheers RicB -------- The logic is not necessarily "if A then B." There may be a third (at least) element that is required. "If A [and C] then B." What Ric is demonstrating is that loose pins *by themselves* do not cause false beats; but loose pins and [some other condition] still may do so. Maybe that other condition has to do with the string -- how it was originally stretched across the termination points -- , or the other termination point, or the angle of the upper surface of the bridge, or even something to do with wave travel through the bridge and soundboard. Probably it's not easily testable. But we can't conclude "if not B then not A" until we know certainly that there are no other elements involved. Ric's instance proves that "if not be then not A" is false.
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