I think the major good idea in Unix was its clean and simple interface: open, close, read, and write.
That brings me to Dennis Ritchie. Our collaboration has been a thing of beauty.
I wanted to have virtual memory, at least as it's coupled with file systems.
The X server has to be the biggest program I've ever seen that doesn't do anything for you.
So maybe I can go back to being a Gardeners' World addict again.
FORTRAN was the language of choice for the same reason that three-legged races are popular.