> Since when do OOP languages have to be single paradigm?

What I really meant to say with that was that it's lisp at its core -i.e. if one wants to place it squarely in one single paradigm, imo that one should be "Functional".

I was just surprised to see it listed as an example of OOP language, because it's not the most representative one at that.

The Art of Metaobject protocol was written and researched in Lisp.

Provides an OOP programming model, that no mainstream language, other than Common Lisp fully supports.

https://en.m.wikipedia.org/wiki/The_Art_of_the_Metaobject_Pr...

Dylan, Julia and Clojure only have subsets of it.