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Amateur makes fools of the experts, Marcus Chown September 1995, [https://www.newscientist.com/article/mg14719952-200-amateur-makes-fools-of-the-experts/] . An experiment that for eighty years has been cited by physicists as a confirmation of Einstein’s special theory of relativity is nothing of the sort. This remarkable discovery has been made not ...


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The abacists of 16th century Italy correctly identified the rule of signs from multiplication. Typical of their arguments (using modern notation) is: $64 = (10 - 2) \times (10 - 2) = \dots =100 + (-40) + (-2\times-2) = 60 + (-2\times-2),$ so that "subtract 2 times subtract 2" must equal four. (There was still no concept of a negative number.) Cardano ...


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My theoretical physics papers and thesis were written by hand, then typed on an IBM "golf ball" typewriter. The golf ball was so called because the type head was about the same size as a golf ball. The type heads were interchangeable with different fonts and symbols. Corrections were made using tippex. 40 years later, I'm still amazed at the skill of the ...


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There were several layers of craft technology now partly superseded by pdflatex and friends. There were author's instructions for marking up manuscripts with type font indications, there were technical typists adept at using special math symbol shapes with their modified typewriters, there were Monotype operators who ran typesetting machines from the marked ...


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