🇺🇸 Jack Dorsey

On March 21, 2006, Jack Dorsey sent the first tweet. It read: "just setting up my twttr." Sixteen years later, that same platform would be acquired by Elon Musk for $44 billion, having reshaped political discourse, journalism, celebrity culture, and real-time information sharing across the globe. Dorsey himself would be long gone from the CEO chair by then, having already built a second multi-billion-dollar company from scratch and cultivated a public persona as eccentric as any in Silicon Valley. The man who launched one of the defining communication technologies of the twenty-first century did it while moonlighting. His partner at Twitter suggested the hundred-and-forty-character limit. Dorsey's genius was recognizing that an idea as simple as a public status update could become the nervous system of global information.

Jack Patrick Dorsey was born on November 19, 1976, in St. Louis, Missouri. He was a quiet child with a stutter who became obsessed with maps and how cities work — a fascination that would later manifest in his product philosophies about networks, flows, and real-time systems. As a teenager he taught himself programming and became interested in dispatch routing software used by ambulances and taxis: systems that connected mobile units to a central network in real time. He studied at the Missouri University of Science and Technology and then at New York University, but left before graduating to move to San Francisco and pursue technology.

The idea that became Twitter emerged in 2006 during a brainstorming session at podcasting startup Odeo, where Dorsey was working as a developer. He proposed a service that would let people share short status updates — what are you doing right now? — over SMS. The project, initially called "twttr," launched publicly in July 2006 and spread rapidly through the technology community, gaining mainstream attention during the 2007 South by Southwest conference where usage spiked dramatically. Dorsey became CEO of the company, but was pushed out by co-founders Evan Williams and Biz Stone in 2008, returning only in 2015 — first as interim, then permanent CEO — and transforming the platform before leaving again in 2021.

While away from Twitter, Dorsey built something remarkable. In 2009, noticing that small businesses and individuals couldn't accept credit card payments easily, he co-founded Square with his friend Jim McKelvey. The product was elegant in its simplicity: a small white plastic dongle that plugged into a smartphone's headphone jack and allowed anyone to swipe a credit card. Square democratized payments in the same way that Twitter had democratized broadcasting. Within a few years, Square had expanded into point-of-sale hardware, business loans, payroll, and banking services, building a financial ecosystem for the underbanked and the small business owner that the traditional banking sector had neglected for decades.

Square went public in 2015 — the same year Dorsey returned to Twitter as CEO — making him the rare executive running two public companies simultaneously. The dual-CEO role was exhausting and unusual, and critics questioned whether any person could give adequate attention to two organizations at that scale. Dorsey's answer was characteristically idiosyncratic: he meditated for two hours each morning, walked five miles to work, ate one meal a day, and maintained a rigorous daily structure that allowed him to function at extraordinary intensity. Whether this asceticism was the source of his productivity or a symptom of his personality is debatable. What is not debatable is the output: two transformative companies built in parallel.

In 2021 Square rebranded as Block, reflecting its expansion into cryptocurrency and blockchain technology through its Cash App, which by then had over 40 million active users. Block's Bitcoin investments and Cash App's peer-to-peer payment volume put Dorsey at the center of the fintech revolution he had helped create. He remained deeply interested in decentralized technology, funding the development of Bluesky, an open-source social media protocol he hoped would create a Twitter alternative beyond the control of any single corporation — a fascinating position for someone who co-founded one of the most powerful centralized media companies on earth.

Jack Dorsey's net worth fluctuates with Block's share price but has reached as high as $14 billion. His legacy spans two industries: social media and financial technology. The tweet became the unit of public discourse for a generation. The Square reader became the point-of-sale terminal for millions of small businesses. He built both from the same instinct: find a service that should be accessible to everyone and make it simple enough that anyone can use it.