This idea was inspired by the article on Apple possibly using a new processor platform for their next line of macbooks. We know that their higher-end laptops have been using 2 graphics systems to balance power consumption with performance (discrete and integrated graphics). How feasible would a macbook utilising both intel and ARM processors be? It could use ARM for less intensive tasks like surfing the web (say, using mobile Safari) to cut down on power usage. It would then switch over to intel for more intensive tasks like photoshop. Likewise, the inclusion of ARM could mean that IOS apps can run on macs. Whether they run properly is another issue though (I imagine apps designed to operate via a touchscreen might need to be redesigned for a keyboard/trackpad interface), but it would certainly increase the versatility of the mac platform dramatically. What would the possible hurdles and challenges to such an approach be?