Yes, immutable data will generate garbage. The problem with Clojure is that it generates a ton of garbage during start up, which isn't the case with Scala. I c

Yes, immutable data will generate garbage. The problem with Clojure is that it generates a ton of garbage during start up, which isn't the case with Scala. I certainly welcome any improvements in Clojure. I've looked at Mirah, but it's quite immature and has serious problems with Java generics because of Java's type erasure.