@geoffkait
As usual, you're completely wrong. How many products are out in the market now that do a somewhat decent job of taking a thin, basic stereo input and manipulating it to give it all kinds of depth and width? The little bluetooth speaker in my daughter's bathroom does that. It would be impossible to accomplish that task if we didn't pretty well understand what gave rise to those phenomenon in an audio signal. Beyond all that, recording engineers have been mixing in all those little tricks for a long, long time, so they must understand what happens with a signal to capture those phenomenon. Why don't you just quit while you're behind?