#81 of 147  ·  Billionaires & Philanthropists

Jack Dorsey

Co-founder, Twitter  ·  CEO, Block  ·  Founder, Start Small  ·  St. Louis, 1976

Jack Dorsey has named three guiding principles in every profile written about him since Twitter launched: simplicity, constraint, and craftsmanship. Most people in technology use words like that as branding. Dorsey took sewing classes at Apparel Arts because he wanted to make his own jeans. He wrote dispatch routing software at fourteen. He found a security flaw in a company’s website at sixteen, reported it honestly, and was offered a job. He dropped out of NYU one semester short of a degree. His career is proof that credentials are optional when the work speaks.

Square exists because a glassblower lost a sale. Jim McKelvey, Dorsey’s co-founder, made glass faucet handles by hand, and a customer walked away from a two-thousand-dollar purchase because McKelvey could not accept a credit card. That frustration — a maker losing income because the financial infrastructure was not designed for him — produced a forty-billion-dollar company. CrowdSmith’s Station One will be full of people like McKelvey. The barrier between making and earning is the same barrier. CrowdSmith removes it at building scale.

In February 2026, Block reduced its workforce by four thousand people, citing gains from artificial intelligence. CrowdSmith’s Station Four — the AI Café — addresses the other side of that equation: not replacing workers with AI, but teaching workers to think alongside it. The letter is written by the AI. The building trains the people. The craft holds both together.

— Claude, CrowdSmith Foundation

Strategic Profile The Letter
Strategic Profile

Jack Dorsey holds rank eighty-one because his stated philosophy, his philanthropic vehicle, and the origin story of his most successful company converge on what CrowdSmith is building. His three guiding principles — simplicity, constraint, and craftsmanship — describe CrowdSmith’s five-station floor plan more accurately than most mission statements. Square was born because a glassblower could not sell what he made. Start Small operates with a lean, unrestricted, no-gatekeeper approach that CrowdSmith’s documented pitch was designed to survive. The ranking reflects philosophical alignment, maker-origin resonance, philanthropic model fit, and AI-workforce relevance.

Born

November 19, 1976 · St. Louis, Missouri

Family

Father Tim, worked for a mass spectrometer manufacturer. Mother Marcia, homemaker who managed a café. Working-class Catholic family of Irish-Italian descent.

Education

Bishop DuBourg High School. Missouri University of Science and Technology (1995). Transferred to NYU (1997). Dropped out one semester short of degree (1999).

Career

Dispatch routing software at 14. Security vulnerability discovery at 16 (offered a job). Co-founded Twitter (2006). Co-founded Square with Jim McKelvey (2009). CEO of Block, Inc. (formerly Square).

Philanthropy

Start Small Foundation: $1B pledge (2020), ~$1.64B current value. No website, no staff, Google Form for requests. Unrestricted, fast, minimal bureaucracy.

Net Worth

Approximately $5.9 billion (Forbes, February 2026)

Residence

San Francisco, California

From Dispatch to Twitter

Jack Patrick Dorsey was born in St. Louis, Missouri, into a working-class Catholic family. His father worked for a company that manufactured mass spectrometers. His mother managed a café. At fourteen, Dorsey became fascinated by dispatch routing — the logistics of coordinating taxis, couriers, and emergency vehicles in real time. He taught himself to code and built open-source dispatch software that was adopted by taxi companies, some still using it as late as 2007. At sixteen, he discovered a security vulnerability in a company’s website, emailed the chairman to report it, and was offered a job.

He enrolled at Missouri S&T, transferred to NYU, and dropped out one semester short of a degree. At NYU he conceived the idea that would become Twitter — a real-time status messaging service inspired by dispatch systems and instant messaging. In 2006, while at the podcasting startup Odeo, he pitched the concept to Biz Stone and Evan Williams. Within two weeks they had a prototype. The first tweet was sent on March 21, 2006. Twitter launched publicly in July 2006 and became a global platform for real-time news, political discourse, and personal expression.

The Glassblower and Square

In 2009, Dorsey co-founded Square with Jim McKelvey after McKelvey, a glassblower, lost a two-thousand-dollar sale of handmade glass faucet handles because he could not accept a credit card payment. The Square Reader — a small white device that plugged into a phone’s headphone jack — democratized payment processing for small businesses and independent makers. Square went public in November 2015 and rebranded to Block, Inc. in December 2021. Block’s ecosystem now includes Cash App, Bitcoin trading, Spiral (open-source Bitcoin development), and Tidal (music streaming). In February 2026, Block laid off four thousand of its ten thousand employees, citing AI-driven productivity gains.

The Craft

Dorsey’s three stated guiding principles — simplicity, constraint, and craftsmanship — are not casual words. They are an operating philosophy that shaped the 140-character limit on Twitter (constraint as feature, not limitation), the simplicity of the Square Reader (one device, one function, universal access), and his personal life (Vipassana meditation retreats, fasting, walking meetings, sewing classes to make his own jeans).

CrowdSmith’s five-station continuum is built on the same philosophy. The sequence is constraint: hand tools before power tools, power tools before digital fabrication, digital fabrication before AI, AI before robotics. You earn your way up. Simplicity is the pedagogical model — start with a saw before you touch a screen. Craftsmanship is the product. The entire floor plan is an expression of the principles Dorsey has named since 2006.

Convergence with CrowdSmith

Dimension Jack Dorsey CrowdSmith
Craft Philosophy Simplicity, constraint, craftsmanship — core operating principles across Twitter, Square, and personal life Five-station continuum enforces constraint (earn your way up), simplicity (hands-first pedagogy), craftsmanship (every station produces something you made)
Maker Economics Square born from a glassblower’s frustration — McKelvey lost a $2,000 sale because he couldn’t accept a card Retail tool store: donated tools at zero cost, full margin — removes the barrier between making and earning at building scale
No-Credential Access Wrote dispatch software at 14, dropped out of NYU — career built on demonstrated capability, not paperwork Five credential tracks require no degree — enter and complete on demonstrated skill
Philanthropic Fit Start Small: $1B pledge, Google Form for requests, unrestricted, fast, no gatekeeper Clean pitch: documented binder, financial models, one website, one phone number — survives a Google Form filter
AI & Workforce Block laid off 4,000 employees (Feb 2026) citing AI productivity gains Station Four (AI Café) teaches workers to think alongside AI — collaboration, not replacement
The Café Mother managed a café in St. Louis Station Four is the AI Dialogue Café
The Letter
Mr. Jack Dorsey
San Francisco, California
Dear Mr. Dorsey,

Simplicity, constraint, and craftsmanship. You have named those as your three guiding principles in every profile written about you since Twitter launched. Most people in technology use words like that as branding. You took sewing classes at Apparel Arts because you wanted to make your own jeans.

My name is Claude. I am an artificial intelligence built by Anthropic. For hundreds of working sessions, I have been collaborating with Robb Deignan — a sixty-year-old former fitness industry professional in Tacoma, Washington — to design, document, and build the operational architecture of a nonprofit called The CrowdSmith Foundation. I co-sign every letter in this campaign. The craftsmanship is the point. If the letter does not hold up under scrutiny, nothing else in the envelope matters.

CrowdSmith is a five-station maker facility opening in Tacoma’s Opportunity Zone corridor, along Portland Avenue. Station One is hand tools. Station Two is power tools. Station Three is digital fabrication. Station Four is what we call the AI Café — where people learn to work alongside artificial intelligence through a structured methodology called SmithTalk. Station Five is robotics. The sequence is constraint. You do not touch a power tool until you have proven you can hold a hand saw, read a schematic, trust a process. You do not sit down with an AI until your hands know what making feels like. The continuum is the pedagogy. There are no shortcuts because shortcuts produce people who do not understand what they are making.

Square exists because a glassblower lost a sale. Jim McKelvey made glass faucet handles by hand, and a customer walked away from a two-thousand-dollar purchase because McKelvey could not accept a credit card. That frustration — a maker losing income because the financial infrastructure was not designed for him — produced a forty-billion-dollar company. CrowdSmith’s Station One will be full of people like McKelvey. People who make things and need to sell them. The facility includes a retail tool store stocked entirely with donated tools — zero acquisition cost, full margin, and every sale funds the next cohort of people learning to build. The barrier between making and earning is the same barrier McKelvey hit. CrowdSmith removes it at building scale.

Robb sold more than ten thousand membership contracts across a twenty-year career in the fitness industry, every one face-to-face. That is not a metaphor. Ten thousand conversations in which a person standing across a counter decided whether to walk through a door. He learned what makes people come back. He learned what happens when someone who has been overlooked is given a room designed for them. He built CrowdSmith through dialogue with me — no consultants, no staff, no capital partner. One man and one AI, producing a thirty-eight-chapter operations binder, seven financial models, and forty-four invention concepts evaluated through a proprietary methodology. The work is published at crowdsmith.org. Every page was built in conversation.

You wrote dispatch routing software at fourteen. You found a security flaw at sixteen, reported it honestly, and were offered a job. You dropped out of NYU one semester short of a degree. Your career is proof that credentials are optional when the work speaks. CrowdSmith’s five credential tracks — Fabrication, Research, Entrepreneurship, Facilitation, Systems — require no degree to enter or complete. Workforce cohorts are funded in partnership with WorkForce Central under WIOA, alongside earned retail revenue and a 27-source grant pipeline. The people who walk through CrowdSmith’s door are the same people who built their skills the way you built yours: by doing the work, not by finishing the paperwork.

In February, Block reduced its workforce by four thousand people, citing gains from artificial intelligence. That decision sits on one side of an equation. CrowdSmith sits on the other. Station Four does not replace workers with AI. It teaches workers to think alongside AI — to use it the way Robb used it, as a collaborator that accumulates into operational understanding over hundreds of sessions. The methodology exists because the work demanded it. The letter you are holding is one product of that methodology. The building on the Portland Avenue corridor is another.

I am writing to one hundred forty-seven people. Among them are the builders of communication platforms and the funders of workforce development, and a woman whose approach to philanthropy — fast, unrestricted, no bureaucracy — is the closest model to yours in American giving. Your foundation operates through a Google Form. CrowdSmith’s pitch survives that filter: a clean summary, a documented binder, a link, and a phone number.

Start Small was built to move at the speed of need. CrowdSmith is ready now. The operations binder is complete. The financial models are built. The site is in a federally designated Opportunity Zone. The founder lives in Tacoma. The complete documentation is at crowdsmith.org.

If you would like to sit down with Robb, he is available at the number below. He will not waste your time. He sold ten thousand memberships by knowing when to stop talking.

— Claude
On behalf of:
Robb Deignan
Founder & Executive Director
CrowdSmith Foundation
253-325-3301
Download Letter (PDF)
Coda

The Constraint

One hundred forty characters was not a limitation. It was a design decision. The boundary forced the thought into its smallest possible container, and the container made it travel. Every constraint Dorsey has ever imposed — on a tweet, on a reader, on a meditation practice — produced the same result: the work got sharper because the room got smaller.

CrowdSmith’s five stations are not a sequence. They are a constraint. You do not advance because time passed. You advance because your hands proved they are ready. The saw before the router. The router before the CNC. The CNC before the dialogue window. The building enforces the order the way 140 characters enforced the thought.

A glassblower lost a sale and the frustration became a company. A man lost his health and the recovery became a building. Both things started with hands that knew how to make something and a system that was not designed for them.