Quote:
Originally Posted by LeeD
We can agree about trying to hit thru 2.5 tennis balls, I think.
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Yes, that is the number that comes from calculations too. I think it was rounded up to 3 which also nicely matched the number of balls in a can, and then continued to be used as visual aid. However, the can should be somewhat flexible, like a plastic tube, so that it can arrange itself on a gentle curve.