Update: Seems as though wires have been crossed here. We just got this from Mark: “Basically I was saying ‘that’s dumb’ at the notion that stereoscopic 3D (S-3D) gaming was somehow new and pointed out in the next answer that we’ve been doing it for 10 years. I wasn’t trying to say the tech was dumb. We’re pretty supportive of the idea of S-3D.”
Consider them uncrossed.
“That’s dumb,” he said.
“I have a 3D monitor sitting in my office and stereoscopic has worked on Unreal for a long time. In fact one of the guys pushing stereoscopic sent me the monitor, he said, ‘Your games are great on these monitors,’ so he sent me one. So Unreal works fine on stereoscopic, it’s just you’ve got to change out your screens to use it – that’s a big accessory.”
There’s a full interview through there, including confirmation Epic isn’t working on a Wii game. Never saw that coming.