Jack Dorsey is the creator, co-founder, and Chairman of Twitter, Inc. Originally from St. Louis, Jack's early fascination for mass-transit and how cities function led him to Manhattan and programming real-time messaging systems for couriers, taxis, and emergency vehicles. Throughout this work Jack witnessed thousands of workers in the field constantly updating where they were and what they were doing; Twitter is a constrained simplification designed for general usage and extended by the millions of people who make it their own every day. Jack is dedicated to creating public goods which foster approachability, immediacy, and transparency, and is starting a second company named Square focused on bringing these concepts to commerce.
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