The fingers have two long flexors, located on the underside of the forearm. They insert by tendons to the phalanges of the fingers. The deep flexor attaches to the distal phalanx, and the superficial flexor attaches to the middle phalanx.
An adult can only get a maximum IQ of 161 on the Cattell III B test and 183 on Culture Fair. A top two per cent score on Cattell III B would be 148 or over, while for Culture Fair it is 132 or over. The two papers test different types of IQ.
Based on 7 billion people in the world there should be about 10.5 million people with an IQ above 145. It's definitely a quick back of the envelope calculation but you get the point. it's not the numbers that are suspect, it's the fact that all these people have taken an IQ test and it's now publicly available.