I found this very interesting... it's an experience I guess many of us are far removed from.

I've talked with people about the prevalence of functional analphabetism*... and I was surprised how people could not believe the numbers, because all the people they knew were smart. Self-selection of your peer group, and all that.

*(I am not implying the guy in the video is an analphabet)

Well done to this gentleman. An IQ test can be a trap for people, whether they test high or low. The school I went to specifically did not do them at all.