If we asked Superman to stand in front of a brick wall and tell us who is on the other side, he could easily use his X-ray vision to see straight through, right? He’d be able to tell us all sorts of details, too, from something as simple as what that person looks like to quickly discerning if they are happy, sad, scared, or even in danger. And if necessary, he could break through the wall to help them. But what if we put you in front of the same wall? Could you match Superman’s feat?   Of course not! And in this scenario, you’d be okay with that. After [...]