- when I read Clark Weissman's `LISP 1.5 Primer' in 1968 - when I finished a student programming assignment a year later and realised that a well-chosen set o

- when I read Clark Weissman's `LISP 1.5 Primer' in 1968 - when I finished a student programming assignment a year later and realised that a well-chosen set of procedures constituted what we'd now call a DSL - when I ported Martin Richards' very clean BCPL compiler and realized that you could write efficient code in something that wasn't Fortran - when I read the Thompson/Ritchie paper on Unix - when I completed my first reading of SICP