What are school tests trying to measure?

I’ve just started reading The Lady Tasting Tea, the story of statistics in/and modern science. But one of the early examples has gotten me thinking – how would a scientist go about testing the general intelligence/retained knowledge of a group of students? Given: Whatever we measure is really part of a random scatter, whose probabilities […]

Knowledge isn’t linear

Human progress isn’t a straight line. This is as true of knowledge as anything else. Only in a computer game does knowledge accumulate through discrete ideas, with defined benefits and pathways. In real life knowledge is messy, unpredictable and often the result of jamming together ideas and experiences in unpredictable ways. While experts can identify […]

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