I have a 2010 17 inch MBP that I am considering to trade to a guy on craigslist for his 2011 MBA 13 inch. My 17 inch may be worth a couple hundred more than his air since I also have 8gb ram and a 128gb ssd. I am willing to give up this power in order to get a smaller machine that is easier to transport back and forth to class. I think I am ready to trade but one of the questions I have is if it is possible to comfortably view 2 safari pages or 2 MS word docs side by side. One of the things that is good about the 17 inch is because of the resolution, I can watch 2 windows side by side. For example, I may watch a youtube video on the left side while searching google on the right without straining my eyes. I want to know if I have to give up this capability when using a smaller machine.