One of the more entertaining problems that mathematicians have addressed is what is known as a drunkard's walk. You can tell it was invented in a pub:

"Hey, what would happen if we were so pissed that we just wandered in a random direction, for a bit then wandered off in another one? How long would it take us to get home?".

I've been spending a little time in the Rift beta and preview recently and some of the design decisions feel a little bit like that. One minute, I'd find myself thinking"What do you mean, if? Hic!"

*"That's fantastic! Every game should have that."*and then the next I'd be sighing

*"Seriously, have you learnt nothing in the last six years?"*.