Concurrency is not parallelism, and you&#x27;re conflating the two. Multicore is for parallelism: literally doing multiple tasks at the same time. Apps are not making good use of parallelism. Apps certainly do make good use of concurrency--your example of moving background work off the UI thread is an example of that--and the Web needs to support that better. But that&#x27;s not a parallelism problem, and it&#x27;s not related to multicore: note that what you describe is a good idea even with only one CPU.<p>&gt; but you clearly haven&#x27;t been shipping high gloss end-user applications on mobile devices.<p>Yes, I have. Can I suggest you stop inserting these random jabs into your posts?