Yes, I worded that poorly - I meant it in the sense that there is no systematic, easy way to balance the core-usage of single applications, and considering that for quite some time single core is going to be the prevalent hardware, pushing people to actively increase thread/process count will mean overhead and an extra source of bugs. You can, of course, do it (well even ) if you're a good coder, but that's you, not the OS. On the bright side, the availability of such hardware might spark a little mobile-oriented platform innovation (on desktops it didn't really matter to have balanced-out core usage so not much research went that way).