"The worst aspect of the continuing pace of game development that we fell into was the longer and longer times between releases. If I could go back in time and change one thing along the trajectory of id Software, it would be, do more things more often. And that was id’s mantra for so long: 'It’ll be done when it’s done.' And I recant from that. I no longer think that is the appropriate way to build games. I mean, time matters, and as years go by—if it’s done when it’s done and you’re talking a month or two, fine. But if it’s a year or two, you need to be making a different game."
The slippery slope is