OK, what do you THINK he implied?

Lack of education in number theory. Something that applied to me, only a few years ago. Though earlier in this string, I had a faux pas.

There is the old joke about approximation ... a mathematician and an engineer are trapped in a room with an attractive other person. The rule is, you can approach the attractive person, by dividing the remaining distance in half. The mathematician gives up immediately. The engineer knows that an approximation is good enough. Mathematicians are bound by rigor in their work, like that example.

Or we can say that Unbeliever was speaking like an engineer. I one-upped with the rigorous version.