Wittgenstein would approve of your use of 3 rhetorical questions in a row.
I tell a college student: “Perpetual motion machines violate the laws of thermodynamics.” He repeats that back to me. Does he *know* it? I do the same to a 6-year-old. He repeats it. Does he now know it? I do the same to a parrot. Do you suppose I’ve just taught a bird physics?
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Deep understanding can be measured with good tests. Bad test question: PM machines violate which laws of thermodynamics? Good test question: *has illustration of a PM machine the student hasn't seen before* Explain how this specific machine violates the laws of thermodynamics
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Well put! You need to write all tests.
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The physics room thought experiment
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I'd like to buy your parrot.
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This is complete wrong, regardless. "Perpetual motion machines" absolutely exist, relative to Earth. Earth itself is in perpetual motion around a Sun... It saddens me when people make this statement, as if it is has ANY scientific validity: it is another anti-human falsehood.
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This is completely wrong. Planets orbiting a star are not machines, there is no work being done, and therefore no conservation violation. Plus, in the infinitely long run orbits are unstable because of gravitational waves.
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Please don't teach them physics. The dodo uprising was bad enough.
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This is a variant of the Chinese room thought experiment.
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