philzook you are rapidly becoming one of my favorite bloggers! I don't have anything to add, really, I just want to encourage you. Your content and style are awesome. :)
Wow! I really appreciate this! I'll try to think of this during my frequent existential crises wondering what the hell I'm doing with my life.
I'm very unfamiliar with this, but are Kanrens similar to Answer Set Programming? with ASP programs you generate a set of symbols, define relations between them and then filter out wrong answers with logic formulas. It's a prolog-y dialect that gets solved with something like a SAT solver.
Awesome. I also liked your implementation in Julia.
What about evalo though?
A good question. For reference, here is a link to an interactive version of evalo being explained http://io.livecode.ch/learn/gregr/icfp2017-artifact-auas7pp Very intriguing stuff. I have not studied evalo in depth yet. I am curious about the relationship between evalo and higher order unification.