Which is not very profound. The thought that looking at a ball being kicked and kicking a ball activates similar neural pathways sounds incredibly obvious.
One might assume that is the case, but human beings assume a lot of things that are dead wrong. So while you might have an assumption, it's a pretty good practice to check and see if your assumptions align with reality.
There's quite a few things about our brains that might seem obvious, but are actually quite counter-intuitive in practice.
