Engineers and technicians are trained different theories regarding the flow of electricity. One theory addresses electron movement while the other theory looks at electron hole movement. When an electron moves left to right then the electron hole moves right to left.

It's just as confusing as trying to determine who won the calculator war, Hewlett Packard (HP) with their Reverse Polish Notation (RPN) or Texas Instruments (TI) with their Standard Algebraic Notation (SAN). Engineers typically were trained to use RPN while technicians SAN. We may strive to be a classless society but mankind always finds a way to classify people.


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