That's right. My first reaction after learning Node was that its Tcl/TK done poorly but with a faster runtime. Tcl/Tk had first class event loops from the begi

That's right. My first reaction after learning Node was that its Tcl/TK done poorly but with a faster runtime. Tcl/Tk had first class event loops from the beginning (of time), later it acquired coroutines as well. The best part for me, however, was that in Tcl you can have multiple interpreters in the same process, each in its own native thread if you want. No GIL, no need to pickle/unpickle to talk the other interpreter. Had Python adopted this model, using multiple cores would have been so much nicer. That said, the mantle has passed on to Lua, but I still harbor a soft corner for Tcl.