Over the years I have looked over the shoulder of many different designers while they use Photoshop. You would not believe how many of them use the File> Open command with their mouse to load a new image. Whenever I tell them the simpler way, they first pause as though they are contemplating whether or not they should try something new. Next, they double click the grey area as told… As the smile widens on their face they proceed to try it over and over as if they don’t really believe that it is this easy all the while mentally adding up the time they have wasted with the File> open command. I should add that you can also just drag an image into the Photoshop application wiindow to open an image.  It really is the little things in life that can make one smile!