[logicchains]

Performance is not just about the language; Scala and Clojure can be just as fast as Java on the Oracle JVM or OpenJDK. The Android Dalvik VM is just incredibly ineffective at optimisation compared to a real JVM, and Google has done little to improve it. Things might change with the new ART VM, however.

[Touche]

Clojure's startup time is super slow even on the JVM. Here's a good analysis of why: http://nicholaskariniemi.github.io/2014/02/25/clojure-bootst...