Mildly interesting historical note -- a few years ago I was reading an old paper on operating systems from the 1960s. As I recall, it seemed to refer to a proce

Mildly interesting historical note -- a few years ago I was reading an old paper on operating systems from the 1960s. As I recall, it seemed to refer to a process as a "virtual machine". (Sadly, I don't remember the title for a citation here.)