From Amy Touchette’s article for tuts+:
Even though it’s easier than ever today to operate a camera and produce a picture, it’s no easier to recognize the most compelling images among your outtakes and make collective sense of them. In fact, the extensive output digital technology enables can make it even more difficult: while the haystack of digital files can grow to immense proportions, the number of needles (i.e. meaningful pictures) necessary to evoke a theme or narrative remains quite small.
However, being able to find the best pictures among a group of images and to understand what links them is one of the key skills that distinguishes photographers from people who take pictures.