Who is Jack Dorsey?
Born in 1976, Jack Dorsey was a quiet child who spent his teenage years listening to police scanners. He was fascinated by radio communication.
By the late 1990s, he had moved to New York University to study programming and dispatch systems. He dropped out before finishing his degree.
In 2000, he built early prototypes of real-time status-sharing platforms, inspired by how couriers and emergency responders communicated short, time-stamped updates.
The idea of “status messages” would become the seed of Twitter.
How Twitter was born
In 2006, while working at Odeo (a podcasting startup co-founded by Evan Williams), Dorsey proposed a side project that allowed users to share short updates with friends via SMS. It was simple, lightweight, and spontaneous.
The prototype, built with Noah Glass and Biz Stone, was called twttr. The first message, sent by Dorsey himself, read: “just setting up my twttr.” By 2007, Twitter had exploded at South by Southwest (SXSW). The platform’s live, conversational energy captured the zeitgeist of immediacy.
Dorsey became CEO, but his management style was as unconventional as his philosophy: minimalist, detached, and often cryptic. Within two years, he was ousted from the company he had founded.
The return
Dorsey’s exile from Twitter mirrored the pattern of many Silicon Valley stories: visionary founders undone by their own complexity. Dorsey invested in startups, explored design, and practiced Vipassana meditation.
In 2009, he co-founded Square (now Block), a mobile payments company aimed at democratizing financial transactions. Square reflected Dorsey’s belief in accessibility through simplicity.
Then, in 2015, as Twitter struggled to redefine itself, Dorsey returned as CEO. He split his time between two companies, leading both Twitter and Square simultaneously, something that few tech leaders had ever attempted.
The tweet gone rogue
Under Dorsey’s leadership, Twitter became a global town square, a place where revolutions, political movements, and misinformation collided in real time. The Arab Spring, the Black Lives Matter movement, and countless geopolitical events unfolded on the platform.
But the same openness that made Twitter revolutionary also made it volatile. Harassment, disinformation, and polarization thrived under its unfiltered freedom. Critics accused Dorsey of allowing toxicity to flourish; defenders saw him as a digital libertarian preserving the chaos of speech.
In Dorsey’s view, he once said, “I don’t see Twitter as a company. I see it as a public service.”
He saw himself as a custodian of communication rather than its master. But ideals alone could not contain the growing storms of politics, propaganda, and profit.
The Trump disruption
During Donald Trump’s first presidency, Twitter became the nerve center of global politics. Every tweet could move markets or ignite controversy. Dorsey faced immense pressure to define the boundaries of speech in a digital democracy.
In January 2021, following the U.S. Capitol riot, Twitter permanently banned Trump’s account, an unprecedented move that divided the world. Dorsey called the decision “the right one for Twitter,” but admitted it felt like a failure to create a healthier digital discourse.
By late 2021, Dorsey stepped down as Twitter’s CEO for the second and final time. In his resignation letter, he wrote:
After Twitter
“There’s a lot of talk about the importance of a company being ‘founder-led’. Ultimately, I believe that’s severely limiting and a single point of failure.”
After stepping down from Twitter, Dersey turned his focus to Block and to decentralized social media protocols. He funded the Bluesky project, a vision for a federated, open, and user-controlled network. Dorsey’s obsession shifted from building platforms to unbuilding hierarchies.
After Elon Musk acquired Twitter in 2022 and Twitter was rebranded as X, Dorsey publicly criticized the new direction, lamenting that his creation had lost its spirit of simplicity and open exchange.
Part coder, part philosopher, Jack Dorsey remains one of the founders of modern communication technology. He once described his role not as inventor but as conduit: “The best technologies disappear. They let human nature speak.”