Makes perfect sense to me. You know what I liked best... The little caption below!
If know one dates them, then no one will marry them. Then they will have no offspring. Then they will be extinct.
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.