nb: Robert Recorde also came up with the equals sign as two horizontal parallel lines "=". Yes, that one. "bicause noe 2, thynges, can be moare equalle" (and

nb: Robert Recorde also came up with the equals sign as two horizontal parallel lines "=". Yes, that one. "bicause noe 2, thynges, can be moare equalle" (and helped make + and - signs more popular) https://en.wikipedia.org/wiki/Robert_Recorde https://en.wikipedia.org/wiki/Robert_Recorde see page 5: https://sigapl.org/Articles/Language%20as%20an%20intellectual%20tool-From%20hieroglyphics%20to%20APL_sysj_r_29.pdf https://sigapl.org/Articles/Language%20as%20an%20intellectua... obligatory mention of Notation as a Tool of Thought 1979 Turing Award lecture by Ken Iverson https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.pdf https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.p...