Antigravity nonsense

I will never forget Sal, this Mechanical Engineering grad student that I knew way back when. He was a real pain and a bit of a nut.

He was ranting about how he wanted to build an antigravity system and how physicists laughed at him. Me, I wasn't about to laugh, but I did know that he had descended into quackery.

That's what happens when engineers think exclusively as engineers, plugging and chugging their physics equations, without properly understanding the physics principles themselves.