You mean what they call "crafts occupations"? There again, you (and they) are making the mistake of lumping all of "those people" together. Someone with an IQ

You mean what they call "crafts occupations"? There again, you (and they) are making the mistake of lumping all of "those people" together. Someone with an IQ of 80 could probably be a decent drywaller or roofer, maybe a mediocre framing carpenter or painter. A good plumber or good electrician? Not a chance in hell.