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Not exactly. If everybody agreed on what incidents should or should notbe
classified "grand theft auto", then we would have hardly any need for
trials or trial lawyers, and even less need for courts of appeal (which
usually deal with questions of law, not questions of fact).
I indicated (with dimension lines) a particular distance and asked the
students to give a name for that distance.
I can think of several non-ridiculous answers to that question.
-- one wavelength
-- one cycle
-- one period
-- the pitch (in the context of a CRT, or a halftone mask, or
a diffraction grating, et cetera)
-- the lattice constant (in crystallography)
Suppose the assignment is to write a sonnet. Do we expect all thestudents
to turn in identical sonnets? Is one sonnet right and all others wrong?
Closer to physics: There are hundreds of known proofs of the Pythagorean
theorem. Is one of these right and all others wrong?
Why should we assume that every solution-set has only one element?