You're unsure if he's a Werner Erhard-style huckster or a Silicon Alley tub-thumper about to do a product launch. That uncertainty mirrors the players' nervous yet giddy involvement.

All of which is genuinely interesting, even if you find incomprehensible the idea of devoting significant portions of your waking time and energy to what is, more than anything, an elaborate scavenger hunt.

It's a divisive, shadowy conversation-starter of a movie that's as much fun to talk and think about as it is to watch.