not like artists, who apparently don't need to know anything.
Thing is, you actually need to know stuff to be a construction worker.
Really? I'd have thought you'd need some kind of certificate to show you could actually do whatever it is you wanted to get paid for doing...but then I guess you don't need to be a trained electirican to heave wheelbarrows of sand around the place or whatever.
Surely this depends on whether you consider the furtherance of civilisation to be a positive thing or not?