[arketyp]

>Visual quality is an "easy" problem. We know exactly how it ought to work (ray tracing has been photorealistic for some time now), it's just a matter of tweaking it to run fast enough on the hardware we have. And we're really close to pulling it off.

That's a good point. And I don't even think it's so much about AI being really hard as it is about photorealism being such a clear goal. Because really there is no limit to the other dynamics that can be explored that aren't as unattainable as a human AI. I still think the ghosts in Pac-man are clever. And while I'm by no means tuned in on the gaming community today, just the fact that you still play these super good-looking games with a few buttons and two joysticks says a lot.