I really enjoyed ShowStopper when I read the original release in 1994. In particular, I really admire the people who worked on that project, because they had a

I really enjoyed ShowStopper when I read the original release in 1994. In particular, I really admire the people who worked on that project, because they had a lot of field-tested reasons for the things they were doing. But the whole subsystems concept basically cleaved the logical domains in a way that was obviously, even at the time when I read it, not going to extend well in the future. While the POSIX and OS/2 stuff can be seen as a kind of hubristic base-covering (the one kernel to end all kernels), it should not have made the cut in a disciplined engineering organization.