I doubt IQ tests

I have no training in psychology, lets make that clear. Despite this, I find it really hard to believe something as complex as a human mind can be measured in a couple hours of answering questions. I think it would be near impossible to figure out, even if you had an unlimited about of time. Sure somebody who scores 130 is probably a lot brighter than somebody who scores 70, but there is a lot more going on .

P.S. I have never taken a IQ test, in case you were wondering if I was trying to reconcile a low score.