"With Time Machine, you can restore your whole system from any past backups and peruse the past with ease. Can’t find a file you want? Enter Time Machine’s time-based browser to see a snapshot of how your entire system looked on any given day — file by file. When you find the file you want, just select it and restore it. Time Machine brings it into the present. You can do the same with a group of files, whole folders, even your entire system. With a single click."