Originally Posted by
Jesus_Phish
They did explain it.
*spoiler*
They weren't dumb teens. They're all doing rather well in college and studying things like sociology etc. None of them start out as "jocks", "sluts" or "dumbasses", even the stoner character was pretty intelligent, albeit stoned a lot. The agency behind it all used chems to turn them into the dumb sterotypes we see in horror movies. The "slut" had chems in her hair dye, the "jock" was being drugged through beer and pheromones in the air.
The reason they were all teens was because historically, it's young people who were sacrificed to the god, not the elderly (probably no small part on it being the elders doing the sacrificing.)
*end-eth the spoiler*
Also, who was "the owen wilson" knock off? The stoner guy? He was one of my favourite characters. I didn't associate him with Wilson at all. It's probably worth noting however, that during the filming of Cabin in the Woods, Wilson was staying low key after a suicide attempt following personal issues.