For the nearly 30 years that Amdahl competed for IBM's mainframe turf, many within Amdahl referred to the Principles of Operation using the proper initialism of PoO (yes, initialism is a word). As IBMers generally referred to the document as the PoPs, this continued to be a friendly poke in the eye from one mainframe competitor to another.
During a technical presentation that I was doing in Kansas City, one attendee took strong objection to my terminology — asserting that I was "talking dirty" by using a scatological term for programming Scripture. After explaining the concepts of abbreviations, acronyms, initialisms, and mnemonics ad nauseum — and why PoO was the proper term to use — she conceded that perhaps I wouldn't burn in hell for all eternity ... just for a few millennia. PoO is still my choice.
