I've seen Monte Carle estimation of pi done, in Halloway's Clojure reference. The problem with the concept of a "Hello World" for concurrency is that there's n

I've seen Monte Carle estimation of pi done, in Halloway's Clojure reference. The problem with the concept of a "Hello World" for concurrency is that there's no intuitive way of illustrating decent parallelism (try explaining livelock or race conditions to a CS 1 class) whereas the success or failure of a "Hello World" program is obvious: does it print?