There's so much misinformation about what the IQ test is for. It has become common understanding that it's a measure of intelligence (or ability, or potential)

There's so much misinformation about what the IQ test is for. It has become common understanding that it's a measure of intelligence (or ability, or potential), however it was never created for that nor ever intended to be that. In addition, intelligence is often seen as a fixed thing. Any reasonable and practical definition of intelligence is in complete contradiction to this idea. Study after study shows that an apparent talent (or intelligence) in one moment does not correlate with future potential talent, intelligence, or general potential for achievement in anything. So to add to your point -- who knows when Feynman took the test and got a 122, and who knows which test he even took -- to me this point decreases any commonly understood value of the IQ test to an even greater extent. Quote from Alfred Binet (creator of the first IQ test) himself: “I have not sought in the above lines to sketch a method of measuring, in the physical sense of the word, but only a method of classification of individuals. The procedures which I have indicated will, if perfected, come to classify a person before or after such another person or such another series of persons; but I do not believe that one may measure one of the intellectual aptitudes in the sense that one measures length or a capacity. Thus, when a person studied can retain seven figures after a single audition, one can class him, from the point of his memory for figures, after the individual who retains eight figures under the same conditions, and before those who retain six. It is a classification, not a measurement…we do not measure, we classify.”