That's not fair--or true. Work on perception and memory has held up astonishingly well. Behavioral experiments from the 1800s and 1900s basically nailed down t

That's not fair--or true. Work on perception and memory has held up astonishingly well. Behavioral experiments from the 1800s and 1900s basically nailed down the properties of the retina, a hundred years before we had the techniques to measure it physiologically. It's also integrated in a lot of "real world" applications: a lot of work has gone into building psychoacoustic models for audio codecs, color spaces for image reproduction, etc. Findings about attention and eye movements influence UX, and all sorts of products exploit behavioral biases (often for nefarious ends).