On 7/18 Stephen Birkett wrote on the subject of hammer momentum physics: "Looking at this hammer/string interaction for even a short while indicates to me that no amount of elementary physics will reveal very much about the process of energy transfer. I believe arguments based on momentum, energy, square pulses, fourier analysis etc. are all doomed to fail...sorry to say it again...primarily because of inherent non-linearity, but also because there are too many inter-related parameters." Where a mathematical reasoning can be had, it is as great a folly to make use of any other, as it is to grope for a thing in the dark when you have a candle standing by you. -Arbuthnot Dan Squire University of Houston
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