Richard Feynman on the uncertainty of knowledge - video

[Philip Davies]

The IQ test is also biased for language and such.

Of course I looked at an English final exam that our sponsor Nadia uses, she's a top English teacher in Russia. I couldn't get past the first few questions mostly because it's British English and we all know those guys can't speak properly!

You are correct to state that many British people are unable to use their language correctly. I tried, and failed in many cases, to help them assume their birthright, for over 25 years, but now all I can do is complain to the BBC about their frequent infelicities.
There are, I know, many gifted craftsmen, including ones who have gained many awards on this forum, who left school feeling that they were failures, because of dyslexia.