Abstract
The colour of the experimenter’s hair does not generally influence the outcome of his experiment, any more than would the positions of the planets or the value of some stock market indicator. So why, if there are so many of them, should we point out factors which have no influence over the phenomenon being studied? When teaching an idea within the text of a standard exercise, it is normal practice to mention only that which is strictly “relevant”, and, in most cases, identified with the variables whose symbols appear in the algebraic expressions used. This results in a draconian selective filtering process.
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© 2014 Springer Science+Business Media Dordrecht
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Viennot, L. (2014). Some surprising invariances. In: Thinking in Physics. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8666-9_2
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DOI: https://doi.org/10.1007/978-94-017-8666-9_2
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