It's an approximation, of course, but a surprisingly good one: loads of predictive value, very strong correlations with things people care about, and so on. For

It's an approximation, of course, but a surprisingly good one: loads of predictive value, very strong correlations with things people care about, and so on. For some quality pondering on the epistemology here, see http://slatestarcodex.com/2014/08/11/does-the-glasgow-coma-scale-exist-do-comas/ http://slatestarcodex.com/2014/08/11/does-the-glasgow-coma-s...