FYI the Greeks didn't have negative numbers. Philosophers were still arguing whether zero could truly be a number (there wasn't really a need for zero as a plac

FYI the Greeks didn't have negative numbers. Philosophers were still arguing whether zero could truly be a number (there wasn't really a need for zero as a placeholder regardless, Greek numerals don't have a positional aspect). Source: http://www-history.mcs.st-and.ac.uk/HistTopics/Greek_numbers.html http://www-history.mcs.st-and.ac.uk/HistTopics/Greek_numbers...