You have a point, I shouldn't have said "no concurrency". You are restricted to what ammounts to coroutining, which is just one of the many concurrency techniq

You have a point, I shouldn't have said "no concurrency". You are restricted to what ammounts to coroutining, which is just one of the many concurrency techniques out there, none of which you can teach with javascript. You wouldn't be able to show many of the other possibilities of concurrent programming.