OTOH you kind of need hashes/maps in the real world (sexprs can provide this by syntax, but not necessarily by agreed-upon function). And Unicode. And standard

OTOH you kind of need hashes/maps in the real world (sexprs can provide this by syntax, but not necessarily by agreed-upon function). And Unicode. And standard representations for the base datatypes. I believe Clojure's EDN format offers all of the above https://github.com/edn-format/edn https://github.com/edn-format/edn