As a tangent, we still don't have a good definition of 'large' software project. Clojure hasn't been around for 8 years, so we don't have 10 or 15 year projects to look at. And I think we'd have heard if there was a 1500 developer team using it. It sounds absurd, but there have been plenty of projects this size and they 'work' insomuch as they generate enough revenue the sponsoring companies paid for them to get that size.