I think one of the interesting things about the Linux phenomenon is that [Linus] has been able to keep some kind of control over such an amazingly extended development environment. I'm certainly glad that I didn't have to develop C in public, because you get more suggestions than you really want. Being in this nice, small group, you can control that sort of thing. I honestly don't know the dynamics and the details of the Linux kernel project. However, one of the knocks on Linux is that it is undisciplined. But I think probably the fairer observation is that it is amazingly disciplined, compared to what you would expect, given the nature of the endeavor.
Linux Magazine: The Guru (15 June 2001).. - On Unix, Linux, and open-source (2001)