Three weeks. We’re past the point where we measure age in days, and we’re into the area where it’s counted in weeks. Today he is three weeks old, this weekend he’ll be three and a half weeks. Next week will be one month, but we’ll have to play that one by ear. I think that you still use weeks even after the first month. Right?
I guess it doesn’t matter, but I want something that sounds right. “How old is your baby?” Eighty-six days? Thirty-three weeks? 0.677419 months? See, it just doesn’t work. You gotta change your units as they get older. And that includes staying away from, “Oh, he’s thirty-one months.” Come on. Don’t make people do the math. Just say two and a half years, and be done with it.