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Re:It's Time for a New Old Language – Guy Steele [video] by le-mark on Monday October 16, 2017 @04:05PM (#15486238)
Notation is soo important. This was a highly memborable presentation by Gerald Sussman, mathematical notation was a big part: "Programming for the Expression of Ideas". Very good to watch:

https://www.infoq.com/presentations/Expression-of-Ideas

Re:It's Time for a New Old Language – Guy Steele [video] by gumby on Monday October 16, 2017 @08:03PM (#15487667)
...and of course Sussman and Steele did a lot of work together (including, most notably, the Ultimate papers).