As far as I can tell, product development is still guided, at the bare minimum by the ability of humans to predict other humans’ preferences based on an assumpt

As far as I can tell, product development is still guided, at the bare minimum by the ability of humans to predict other humans’ preferences based on an assumption of similarities between humans’ minds. I’m not aware of any product development that is intentional truly random, other than perhaps some details like the color of a button.