A very interesting problem is measuring something like general intelligence. I’m not going to delve deeply into this topic but simply want to draw attention to an idea that is often implied, though rarely expressed, in the framing of such a problem: the assumption that an “intelligence level,” whatever it may be, corresponds to some inherent properties of a person and can be measured through their manifestations. Moreover, we often talk about measurements with a precision of a few percentage points, which suggests that, in theory, the measurement should be based on very stable indicators.
What’s fascinating is that this assumption receives very little scrutiny, while in cases where we talk about “mechanical” parameters of the human body (such as physical performance), we know that such parameters, aside from a person’s potential, heavily depends on numerous external factors and what that person has been doing over the past couple of weeks.
Do you know about the g-factor?
Of course I do.