If your Mac resembles an absent-minded professor’s office with files and folders strewn hither and thither, getting to the right spot to open or save a file may have become slow and clumsy. Sure, in an ideal world, you’d organize everything perfectly, but you’d also be flossing twice a day, calling your mother every Sunday, and eating more leafy greens. So let’s talk about a shortcut that lets you put off that big reorg for another day: the sidebar that graces every Finder window and Open/Save dialog...