It isn't a gag. It is a (conjectured, tested, not proven) mathematical fact explained on the SE page. It is relevant to hackernews as a illustration of the eff

It isn't a gag. It is a (conjectured, tested, not proven) mathematical fact explained on the SE page. It is relevant to hackernews as a illustration of the effectiveness of seemingly pointless pictures of text as memes, obnoxious though they be.