This betrays a lack of familiarity with the literature on intelligence. Fluid intelligence doesn’t change much if at all between 14 and 27, when it starts its l

This betrays a lack of familiarity with the literature on intelligence. Fluid intelligence doesn’t change much if at all between 14 and 27, when it starts its long slow decline. Crystallized intelligence can keep rising for decades after that. The number of fields where fluid is more important than crystallized is very small if very important. Having a vast knowledge base, built on a foundation of experience, is more important for most full time academics, never mind those of us not engaged in research. You can’t play at all if your fluid intelligence isn’t high enough but there are a lot of people out there who’re smart and vastly less successful than dumber people who worked consistently at something. At the top are the smart, hard working and lucky but intelligence is not the be all and end all.