1. "Unlimited" my ass.
2. The guy doesn't seem to know what he's talking about.
3. He never really explains the technology.
4. He uses the same few talking points five or six times in a row.
5. The method he describes is completely unfeasible for games that can't lag for reaction time's sake. (there is a balance between graphics and gameplay which must not be destroyed, or else the game won't be fun)
6. I get what he means when he says that it renders only what he looks at, but imagine the computer load generated by looking around...*shudder*