Also MultiLisp, QLisp, *Lisp, and others. Parallel lisps are not a new concept, though they were often written with specific machines in mind (*Lisp for instance).
It's not about them being a new concept. Do we have Erlang actors or Golang goroutines there? Are they fully safe like Erlang's actors or Rust's futures would be (provided you don't use escape hatches)?
