Comment by staticman2

That analogy ignores what was actually confusing about this topic. A better analogy would be:

Alice has a medical problem related to hill walking so she walks up the hill wearing sneakers, Bob also had a medical problem related to hill walking so he uses a handkerchief to wipe off his sweat while walking up the hill, and Charlie, the out of shape adult, also uses sneakers and a handkerchief but not in a medical way even though his feet hurt without sneakers and he does sweat.