Related is the difference between theoretical/surface level understanding of things, aka "book learning", and the grok/instinctive/deep level of understanding t

Related is the difference between theoretical/surface level understanding of things, aka "book learning", and the grok/instinctive/deep level of understanding that comes from actual interactive with something. Example: I had purchased some large rare-earth magnets, and my friend told me to just drag one over this big copper nugget outside the Lizzadro Museum of Lapidary arts, and my understanding of eddy currents instantly went from theoretical to practical in a heartbeat, as I felt the drag of the magnet over the very conductive object.