He was puzzled about a 24-year-old man whom he viewed as psychiatrically healthy except for intense depression that lasted for several hours after sex.

I answer negatively:

An outraged Parisian gave up skiing when his instructor addressed him as tu, while a fashionable personal trainer insists upon it because he would not feel right about vouvoyer-ing deltoids and abs.[…]Questioned on his use of tu and vous, a Paris doctor said he doesn't know why he addresses his daughter-in-law as vous and his son-in-law as tu or why he tutoyers his golf pro but vouvoyers his golf partners.

anthophyte, macrophyte