There is something very fishy about this letter.
Your correspondent is very eager for us to know all the places where he has trained as a ‘statistician and econometrician’. We are aware that those who practice those activities deal entirely with numbers; extracting and assembling relationships amongst them.
What is really strange is that in his letter of roughly 730 words there was not a single number drawn from his conclusions – of the sort we often hear; “there is a 15% chance of such and such happening 19 times out of 20”. Very odd.