The headline is not lying. Bekenstein, Hawking, Bardeen and Carter asserted four laws of black-hole thermodynamics and proved three of them. The fourth is what

The headline is not lying. Bekenstein, Hawking, Bardeen and Carter asserted four laws of black-hole thermodynamics and proved three of them. The fourth is what the guys this article is about proved is wrong. The sentence with the word plausible is a bit deceptive, but the headline is fine.