You should look at @nntaleb’s efforts to debunk IQ to start with. Differences in intelligence/s exist somewhere, but we probably overrate our ability to define it, let alone measure it—IQ measures nerdiness & logical puzzle-enthusiasm, but we are far more mysterious than this.

https://medium.com/incerto/iq-is-largely-a-pseudoscientific-swindle-f131c101ba39">https://medium.com/incerto/i...