Rama is a testament to the power of Clojure

Fragment sounds like actor to me. Stateful thing that sends messages to other fragments. Not convinced that's a generalisation of a function.

Fragments have nothing to do with actors. Check out the doc on the dataflow language and you'll clearly see it's a generalization of a function.

https://redplanetlabs.com/docs/~/clj-dataflow-lang.html