You are right. Haskell is an academic research vehicle while Erlang is a pragmatic "industry-strength" (i hate these buzzwords, but they are useful generalizati

You are right. Haskell is an academic research vehicle while Erlang is a pragmatic "industry-strength" (i hate these buzzwords, but they are useful generalizations) functional language. In theory, we could re-write almost any part of OTP in Haskell, in practice, however, "runtime is hard" and the biggest selling point of Erlang is that its runtime and standard library (OTP) has been evolved for almost 20 years and is based on the same principles of a functional language (except, perhaps lazyness by default) as Haskell. In other words, while Haskell is a "playground for researches of type theory in context of programming languages and compilers" Erlang/OT is a "telecom industry-standard toolkit". A close analogy, in my opinion, could be the pair of Scheme/Racket and CL. The first was mostly an academic teaching and research tool, while second is a pragmatic (but unfortunately bloated) tool-set.