Valid point, but I don’t really just start learning whole new vocations, cold. I’m an engineer/software developer, with over 40 years’ experience, and my learning is generally some branch off that (like learning asynchronous programming, or a new UI framework).
Can’t really put it into precise terminology, but I get a “gut feeling,” that something is/is not plausible, and it happens pretty quickly; usually when I start some implementation. I tend to learn by do[0] (note the “sample playground,” in each essay), so the “reality filter” gets applied fairly rapidly.
In any case, I have been dealing with misinformation (sometimes, deliberate), for a long time, and I’m still working fairly effectively, so I guess it works.
Can’t argue with results.
[0] https://littlegreenviper.com/series/swiftwater/