How does OSX scaled resolution work? I have a 15'' retina MBP. In display settings, I basically have two choice either a bigger UI with larger text but lowered resolution. Or a smaller UI and small text at high resolution. I thought the whole point of scaled resolution is that I can make the UI bigger without altering the resolution. I want my retain solution for photo editing on the screen but I also want bigger UI and text. I don't understand why the OS can't simply stretch the UI and text onto more pixels while keeping the same number of pixels on the screen? I also have the same dilemma in making a 4k monitor decision.