1/ Still angry at that person who was upset that covid tests return positive on applesauce. This is a true smoothbrain response, from someone who has never once investigated how measurement works. It's almost logically impossible to measure the qualia of a thing.
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4/ The fuel sensor in a car's gas tank doesn't measure fuel - it's a float, and it measures how high it's riding / what angle it makes with a baseline. If you park your car on a slope, or fill the tank with water, it measures different values.
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5/ Ammeters don't measure amps - they pass electricity through a coil, that creates a magnetic field, that field pulls on a spring loaded readout needle, and the deflection is correlated with current flow. If you bring a magnet nearby, the meter registers amps even w/o current
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6/ Scales don't measure mass, they measure deflection.
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7/ Academic tests don't measure mastery of the material, they measure correct answers (or, rather, answers that match what the test creator wants). If you use a cheat sheet, the test registers correct answers.
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8/ An election doesn't measure popular will, it measures ... whatever.
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9/ Seeing that a covid test responds to apple sauce doesn't tell you that covid doesn't exist, or that the test is an op. It just tells you that tests need to be used in a way consistent with their design, because a test measures X which is correlated with Y IF AND ONLY IF Z.
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10/ you are now asking me to defend the test I decline that's not my point / my goal - I was merely attacking one criticism of it as smoothbrainhttps://twitter.com/metadiogenes/status/1339222638649020418 …
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11/ ok, this is a coherent response, and thank you for it! ...but I disagree. All tests are imperfect. No gas tank meter works in 0 g. No ammeter works under a junkyard electromagnet. It is good that tests are "defective", bc "perfect" costs $∞ https://twitter.com/poutinecurd/status/1339258041406001161 …
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