F#[^], it's non .NET sibling OCaml[^] and pure (standalone) cousin Haskell[^], appear to be making inroads with the financial sector[^]. Can't say if they will dethrone SmallTalk[^], since I'm not in the business, but makes Functional Programming worth a look. However, having written code for over 30 years in many languages, I found F# and Functional Programming to be one of those "mind bending" experiences like going from BASIC (and Assembly) to Pascal, from Pascal (and C) to C++, and now again from C++ to F#. Now that I understand the syntax, I (usually) find F# to be the most readable of the languages I know, and quite a lot of fun to write in, especially when "coding in the small[^]."