In my experience claims of knowing the intelligence of another person are often wrong. Enough so that I reserve judgement much more often than not. I think th

In my experience claims of knowing the intelligence of another person are often wrong. Enough so that I reserve judgement much more often than not. I think the above is part of the doubt you are running into with your claim. You might be able to come up with evidence/stores that would lend credence to you conclusions about your gardener, but I do not think it would move your main point "there has got to be some correlation between IQ and education." forward.