Either change to the new Intel chips, the advantage of ARM becoming less as technology advances. One of my points. Or you could re-compile the MacOS. The how to I would leave up to Apple. The concept and technology now make a unified OS a possibility. As noted others are already making it go. Their first attempt is showing good results. I like the touch aspects of the iPad and the Mac OS functionality. Please do not suggest I switch to Microsoft. Not going to happen. Something I would like added to my wish list.How is it a piece of cake for Apple? iOS runs on ARM. OS X is x86.