Interesting reading - this usenet thread, from 1992, where Andrew Tanenbaum states that Linux is obsolete, and the microkernel has won.

It's also interesting that a major argument is that the Linux will be limited by the popularity of the x86, implying that it will be bound to that (failing!) architecture. ls /lib/modules/$(uname -r)/build/arch shows a different picture nowadays.

One of the more memorable quotes:

Of course 5 years from now that will be different, but 5 years from now everyone will be running free GNU on their 200 MIPS, 64M SPARCstation-5.
It's funny on so many levels.