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The argument is not over whether one should introduce flawed
ideas and then modify them over time into more nearly correct ones
but rather over how one should go about introducing correct (or
nearly correct) ideas. If I have to start with the best physics I
know, then I would have to start my mechanics class on quantum theory
and that would be silly. Instead, I have to build outward based on
the flawed ideas that _the students bring with them_. To do that, I
have to present them with a series of situations in which those
preconceptions _fail_ and then ask the _student_ to resolve that
failure.