@whitequark There's a lot we understand about human behavior, both at macroscopic and microscopic levels, that comes from experimentation. One-way mirror studies, A/B tests, and pretty much any kind of user testing fall under that, in that you're providing stimuli to a human being and seeing how they respond.
The understanding we glean as a society as a result of those experiments is immensely valuable. What I'm calling out is doing those kinds of experiments by accident.