This is a bit of a misconception about how memory works. Erlang's strength of processes memory encapsulation and share nothing semantics are not compromised by

This is a bit of a misconception about how memory works. Erlang's strength of processes memory encapsulation and share nothing semantics are not compromised by alloying multiple assignment. In fact you can very easily model Multiple assignment with Single Assignment, and hand off the managing of that to the compiler.