← Glossary Person
Jack Dorsey
Co-founder of Twitter and head of Block, and an advocate for open, decentralised tech.
Jack Dorsey co-founded Twitter and now leads Block. His consistent theme is decentralisation: systems where your identity and data belong to you rather than to a single company, an idea he is now applying to how AI agents work alongside people.
That philosophy shows up in the tools Block builds, which favour open protocols and self-hosting over closed platforms. Whether it scales is an open question, but it is a clear alternative to the walled-garden approach.
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