Normally, it's a four-year liberal arts degree to learn the subtle arts of weighing up unreliable human-generated evidence and turning it into useful information

I've never heard of that being taught in college. Is there a Bayesian stats class involved? Could these alleged evidence-weighers combine two likelihood ratios with a prior?

I mean, I'm sorry, but the above is just a ridiculous assertion. If there were any four-year university degree which taught people how to weigh evidence correctly, the world would look very different from the way it currently does.