Arguably you can use webworkers (available on V8 and JSC, and thus Narwhal on those platforms) for concurrency problems. Webworkers enforce no shared state thou

Arguably you can use webworkers (available on V8 and JSC, and thus Narwhal on those platforms) for concurrency problems. Webworkers enforce no shared state though, they use a message passing mechanism. Not the greatest solution. Concurrency is important, but I think most server tasks don't require it. JavaScript doesn't need to be the 100% language to "win" it just needs to be the 80% language.