Homeless physicists are such violent people

According to Boing Boing, two homeless men got in a brawl over quantum physics, which ended with a skateboard to the face:

At the time, Fava was chatting with an acquaintance, who is also homeless, about "quantum physics and the splitting of atoms," according to prosecutors. Keller joined in the conversation and, for reasons unknown, got upset, authorities said. He picked up his skateboard and hit Fava in the face with it, splitting his lip, prosecutors said.

Of course he did. The moral: don't (en)tangle with a homeless physicist!