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In answer to your question, yes, Newton's three laws are extremely poorly understood by many in the medical fields... They take a couple of physics classes so they can do well on their MCATs and promptly forget it... NK >When are people going to appreciate that one does NOT have to lift heavy >weights to impose large stresses on the human body and that basic physics >shows that large forces (involving small loads but large accelerations) and >large torques (involving small loads, but long lever arms) can be produced >without adding any load whatsoever to the body? Are Newton's Second Law and >the Law of Levers really so little understood by the sporting, teaching and >medical professions? If so, there is something very amiss with our >edunational system in general. > >Once upon a time a well-known scientist said that no person could presume to >call himself educated if he did not understand the implications of the Second >Law of Thermodynamics - well, I am going to take that even further and state >that no modern person can afford to call himself/herself educated if he/she >does not understand the implications of Newton's even simpler three laws of >mechanics. Thus did not Zarathustra spake! > >Dr Mel C Siff >Denver, USA >http://groups.yahoo.com/group/Supertraining/