One couldn't even measure roughness. So, by luck, and by reward for persistence, I did found the theory of roughness, which certainly I didn't expect and expecting to found one would have been pure madness.
I think your girlfriends getting Jealous," Luce said, gesturing at the pair. "Which one?" He asked. "I didn't realise they were both your girlfriends. " "Neither is my girlfriend. I meant, which one did you think was my girlfriend?