Not just math. The technique is called "nerd sniping": https://xkcd.com/356/ https://xkcd.com/356/ Beware. It's a common trick on forums not entirely unlike

Not just math. The technique is called "nerd sniping": https://xkcd.com/356/ https://xkcd.com/356/ Beware. It's a common trick on forums not entirely unlike this one.