What? Clojure is not similar to Scala at all. Its learning curve is not that steep, because it allows you to learn things "à la carte" - you can pretty much learn it while building things. I have personally met several people to whom Clojure was the very first language they learned. I once give a book to our test automation engineer, and a week later, he has built a dashboard (for test runs) in Clojurescript. He was like: "I am very much surprised myself how quickly I was able to build it." It was a wild mish mash of all sorts of libraries, weirdly looking non-idiomatic Clojure code, but it was a completely functional app.