@cwebber And people normally run whimsical things on "serious" stuff. One needs not to forget that Smalltalk, the inspiration for modern desktops, GUIs, IDEs had exactly that kind of "silliness" when the people back then where thinking about how children could use these things to create programs.
This playfulness is something which is lacking currently in "frameworks", libraries, etc. all very boring strictly typed nonsense where no REPL can be found.