I remember that time. Software quality was really bad back then. You were lucky when you hit a version that didn't crash - hence "never change a running system.

I remember that time. Software quality was really bad back then. You were lucky when you hit a version that didn't crash - hence "never change a running system." It doesn't crash and does approximately what we want it to do, lets stop updating it. At least this is what I experienced in the 90s in mid-sized companies using Unix and Windows NT4.