Besides, don't forget that "there's an insufficient amount of fun in the world" is an EXPLICIT principle and motivation of what Eliezer's doing, right? So, given that he wants to use "mad science" to increase the amount of fun in the world, it's probably useful to see what sorts of fun and goofiness he gets up to, no? (more to the point, if there wasn't any such available, if he was instead all somber and serious, the reaction would be "this way-too-somber-guy is the one that plans on greatly increasing total fun in the world? I wonder what he thinks would count as 'fun'"