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.
-
Show this thread
-
2/ The human inner ear does not measure rotation - it measures the displacement of the cupula in a water filled channel, because the cupula is displaced by the inertia of the water if the head rotates. HOWEVER, if you drink alcohol, relative densities of cupula & fluid change
1 reply 0 retweets 17 likesShow this thread -
3/ and the cupula is displaced, and the measurement system registers acceleration.
1 reply 0 retweets 16 likesShow this thread -
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.
1 reply 0 retweets 21 likesShow this thread -
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
1 reply 0 retweets 16 likesShow this thread -
6/ Scales don't measure mass, they measure deflection.
1 reply 0 retweets 16 likesShow this thread -
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.
1 reply 0 retweets 21 likesShow this thread -
8/ An election doesn't measure popular will, it measures ... whatever.
1 reply 0 retweets 19 likesShow this thread -
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.
8 replies 0 retweets 28 likesShow this thread -
Replying to @MorlockP
Same for measurements. We rarely directly measure anything. At best, we’re just measuring against an index. Scientific testing is usually separated by another step or two from a direct. Measuring X, which correlates to Y but is not Y. It’s all subject to interference.
1 reply 0 retweets 0 likes
me: > It's almost logically impossible to measure the qualia of a thing. you: > Same for measurements. uh...yes
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
This Tweet is unavailable.
-
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.