[whakim]

Of course people can learn new languages, but:

- A nonzero number of excellent potential applicants aren't going to work for your company because they don't want to invest their own development into learning the Clojure ecosystem deeply. (This might be somewhat balanced out by folks who are stoked to learn Clojure.)

- Every non-Clojure person you hire will require significantly more ramp-up time. This can be a real problem for small companies where you lose quite a lot of expertise every time a senior developer leaves.

- These problems compound for every "innovative" technology you add.