GC doesn't have to be global or blocking. If you look at the GC in CLR/.Net 4+ then it can run GC on low priority background threads. I know Go's GC isn't ther

GC doesn't have to be global or blocking. If you look at the GC in CLR/.Net 4+ then it can run GC on low priority background threads. I know Go's GC isn't there yet, but it's easier to centralize a performance improvement under this model i.e. GC improvements will lead to global improvements rather than case by case. There's more than one way to skin a cat on this one.