> Taleb is saying that if IQs above 100 have no predictive power, then what’s the point in measuring them? The whole point of IQ tests is not to identify or ra

> Taleb is saying that if IQs above 100 have no predictive power, then what’s the point in measuring them? The whole point of IQ tests is not to identify or rank people who score above 100. The whole point is to identify those who fall well below 100,because that's actually a disability. Look at it this way: some amusement parks feature amusement rides that are only safe to ride if riders can be kept safe by the safety equipment. One way to ensure safety requirements are met is to admit only people taller than a predefined height. That means that a specific metric (height) is used to pick who is able from those who are not. However, that does not mean taller people are better at riding that specific ride, let alone any attraction. The IQ concept serves the same purpose. Those with a low IQ simply struggle to perform some tasks, but above a fuzzy threshold IQ is a meaningless metric to evaluate or predict success.