Quoting Kevin: She said "I don’t think I’m going to ever use this app." I was like, "Why not?" She’s like, "Well, my photos aren’t good." And I was like, "Well, that’s fine. You can post photos. It’ll be good."
So she goes, "Well, they’re not as good as your friend Greg’s." I was like, "Well, Greg filters all his photos." And she looks at me and she’s like, "Well, you should add filters then." And hence, Instagram Filters were born. This small insight has been attributed as a key reason why Instagram succeeded.