A well installed microcode bug will be almost impossible to detect.
I have to keep up with the scientific literature as part of my job, but increasingly I found myself reading things that weren't really relevant to my academic work, but were relevant to gardening.
I wanted to have virtual memory, at least as it's coupled with file systems.
You can't trust code that you did not totally create yourself.
The steady state of disks is full.
I am a very bottom-up thinker.