Eval / Apply is pure magic

Making a software demo is a form of deliberate, serious play. An act that feeds our curiosity, inventiveness, and drive. It enlivens. It enriches. It entertains. And as we asymptotically approach the A.G.I. that's just around the corner, the capacity for deliberate, serious play will remain distinctively, deeply, deliciously human. Career software people like yours truly may please take note!

Here I illustrate how Clojurists (including Yours Truly) like to solve problems and model things using hammocks, pure functions, and the "it's just data" ideology. Also, while the *problem* focuses on "design in the small" of application logic, many ideas in the *solution* can—and do—scale all the way to "design in the large" of whole systems.