The Xbox 360 is the first console that I've ever worked with that actually has development tools that are better for games than what we've had on PC.

It is not that uncommon for the cost of an abstraction to outweigh the benefit it delivers. Kill one today!

Everybody's saturated with the marketing hype of next-generation consoles. They are wonderful, but the truth is that they are as powerful as a high end PC is right now.

Rocket science has been mythologized all out of proportion to its true difficulty.

It's a good thing Doom 3 is selling very well.

I really think, if anything, there is more evidence to show that the violent games reduce aggression and violence. There have actually been some studies about that, that it's cathartic. If you go to QuakeCon and you walk by and you see the people there [and compare that to] a random cross section of a college campus, you're probably going to find a more peaceful crowd of people at the gaming convention. I think it’s at worst neutral and potentially positive.

The important point is that the cost of adding a feature isn't just the time it takes to code it. The cost also includes the addition of an obstacle to future expansion. Sure, any given feature list can be implemented, given enough coding time. But in addition to coming out late, you will usually wind up with a codebase that is so fragile that new ideas that should be dead-simple wind up taking longer and longer to work into the tangled existing web. The trick is to pick the features that don't fight each other.