I'm not really sure anyone above has implied that intelligence is immutable - just that you can describe it generally. Consider the physical fitness correlatio

I'm not really sure anyone above has implied that intelligence is immutable - just that you can describe it generally. Consider the physical fitness correlations in the article - I don't think anyone would argue that your level of physical fitness is immutable. But just because the value is mutable is no reason to disregard the current value - it can still be a meaningful and useful indicator.