Snapchat is probably most known for one of its earliest innovations: content that deletes by default Like others, I made my own assumptions about this feature and, as it turns out, it's something other than I'd first presumed. Moreover, it reflects the real-life-friends dynamic. Snapchat's approach is rooted in human-centered design. In real life, conversations between and among friends aren't saved, transcribed or recorded in perpetuity. Most of us are more at ease and can be our most authentic selves when we know we won't be judged for every word we say or every piece of content we create. One...