I do a lot of WORK on my 2013 rMBP from video editing, audio creation, and programming. I am also able to do a lot of work on an iMac with 8GB of RAM. Are these tasks not even possible to do on the new systems? Does Final Cut, Logic, and Xcode just fail to run at all? What makes these not Pro machines like everyone is saying? I can't even write one line of code? I can't even edit a 720p video? I can't even produce a 5 second audio clip?