Because they're human writers, and don't sit down and calculate the most efficient use of time, and then only do that? Most scientists and engineers I know aren't that obsessive about how to most optimally spend their time.
"Got Milk" cost tens of thousands of dollars per word. Sometimes it's about quality not quantity.
You missed the point entirely. You can't actually tell if an article is AI-assisted or not. A writer that doesn't leverage AI is going to get outcompeted full stop.
"Got Milk" cost tens of thousands of dollars per word. Sometimes it's about quality not quantity.