Lisp is about writing a dsl that solves your problem. It just happens to be an s-expression dsl. Exactly how it works depends on the problem domain. But in my e

Lisp is about writing a dsl that solves your problem. It just happens to be an s-expression dsl. Exactly how it works depends on the problem domain. But in my experience a lisp dsl is much less brittle than trying to map the problem into a haskell program, especially with a changing spec. This is a bad example because it is so contrived to show off the strengths of haskell. As an example for the strengths of lisp: I wrote a logical dsl that adds a boolean dependent type system to scheme using macros. It's 400 lines long and copies all the bits from Idris I needed and it still feels like a scheme and is fully interoperable with regular scheme.