Twitter Chairman and Square founder Jack Dorsey sat down with Charlie Rose last night to talk about Dorsey’s unique position of being responsible for two technology startups based on the idea of simplicity: Twitter and Square. Watching this interview you realize that Dorsey’s accomplishments have little to do with luck, and more with his focus on creating the purest products by throwing away any unnecessary flourishes. “It’s really complex to make something simple,” he tells Rose.

Dorsey describes himself as an “editor” who edits technology and teams “so that we have one cohesive product that we tell the world.” In the clip above (provided by the Charlie Rose Show), Dorsey talks about how he got the idea for Square and how hard it is to make mobile payments no more complicated than swiping a credit card.