Today, a presumably competent adult, one with great responsibility, who is definitely not a moron or insane, said this to the press when talking about a giant wall:
[B]ut you have to have openings because you have to see what's on the other side of the wall. And I'll give you an example. As horrible as it sounds, when they throw the large sacks of drugs over, and if you have people on the other side of the wall, you don't see them—they hit you on the head with 60 pounds of stuff? It's over. As crazy as that sounds, you need transparency through that wall. But we have some incredible designs.So we'll be building a giant, solar-power-generating, transparent wall between the US and Mexico because drug dealers will be throwing 60 pound bags of drugs over the wall and we want wall tourists to be able to see those bags are coming.