John Larkin doesn't understand them, and doesn't see the point. He had much the same problem with the chemistry part of his science degree.
John Larkin doesn't understand a lot of that either.
A trade education takes time, and tends to have some academic content. The UK and Australia re-named a lot of their trade schools as technical universities, which wasn't a good idea.
John Larkin's grasp of what is actually useful is down there with Cursitor Doom's. He's certainly no more capable of understanding what climate scientists are telling us than Cursitor Doom is.
John Larkin did get a science degree from Tulane, but he was pretty selective about the bits he paid attention to, and climate science wasn't an area where he paid any attention.