How Eight Traitors in a Garage Built Silicon Valley

The story of Silicon Valley begins with a betrayal.

In 1955, William Shockley — co-inventor of the transistor, future Nobel Prize winner, and one of the most brilliant and difficult men in the history of technology — left Bell Labs and moved back to his hometown of Palo Alto, California to start a semiconductor company. He recruited the best young talent he could find: eight sharp engineers in their 20s, each one exceptional.

Within two years, every one of them had quit.

They called themselves the Traitorous Eight. Shockley called them traitors. What they built after they left changed the world more than anything Shockley ever did.

Why They Left

William Shockley was a genius and a tyrant. He subjected his employees to lie detector tests. He made management decisions by intuition and refused to hear dissent. He pivoted the company away from silicon transistors — the technology the engineers believed in — toward a four-layer diode that most of them thought was a dead end.

In the summer of 1957, Robert Noyce, Gordon Moore, and six colleagues — Julius Blank, Victor Grinich, Jean Hoerni, Eugene Kleiner, Jay Last, and Sheldon Roberts — met in secret and decided to leave together. They wrote a letter to a New York investment banker named Arthur Rock explaining what they wanted to do.

Rock had never heard of anything like it: eight engineers, leaving together, looking for a company to back their startup. He found them a backer — Fairchild Camera and Instrument — and Fairchild Semiconductor was born.

What Fairchild Built

Fairchild Semiconductor, founded in 1957 in Mountain View, California, became the seedbed of modern electronics.

The planar process (1959) — Jean Hoerni, one of the eight, invented the planar process — a method of manufacturing transistors by laying them flat on a silicon wafer and building up layers using photolithography. This sounds technical because it is, but the consequence was profound: it made transistors manufacturable at scale, with consistent quality, at falling cost.

The integrated circuit (1959) — Robert Noyce, building on Hoerni's planar process, figured out how to put multiple transistors on a single piece of silicon, connected by deposited metal conductors. He had independently invented the integrated circuit — the microchip — at almost exactly the same moment as Jack Kilby at Texas Instruments. Both men are credited as co-inventors. The resulting patent dispute between Fairchild and TI took a decade to resolve.

The integrated circuit is the foundation of every electronic device built since 1960. Every computer, every smartphone, every car, every medical device, every satellite runs on chips whose lineage traces directly to Noyce's workbench at Fairchild.

The Fairchild Tree

Fairchild Semiconductor didn't just produce inventions. It produced entrepreneurs. Over the following decade, a pattern emerged: talented Fairchild engineers would leave to start their own companies, which would in turn produce engineers who left to start more companies.

The companies that descended from Fairchild — called "Fairchildren" — include:

• Intel (1968) — Founded by Robert Noyce and Gordon Moore, Intel went on to produce the microprocessor and dominate the semiconductor industry for decades. Gordon Moore published his famous observation — now known as Moore's Law — that the number of transistors on a chip doubles approximately every two years. He published it in 1965. It remained accurate for over 50 years.

• Advanced Micro Devices (AMD, 1969) — Founded by Jerry Sanders, a Fairchild sales executive. AMD became Intel's primary competitor and today produces some of the world's most powerful processors.

• Kleiner Perkins (1972) — Eugene Kleiner, one of the original Traitorous Eight, co-founded what became one of the most influential venture capital firms in Silicon Valley history, backing Amazon, Google, and dozens of other companies.

• Sequoia Capital (1972) — Founded by Don Valentine, a Fairchild marketing executive. Sequoia backed Apple, Oracle, Yahoo, Google, YouTube, Instagram, and WhatsApp.

The organizational structure of Silicon Valley — the venture capital model, the willingness to fund unproven teams with unconventional ideas, the culture of spinning out of established companies to start new ones — all of it traces back to the Traitorous Eight's defection from Shockley in 1957.

Why California?

It's worth asking why this happened in northern California rather than Boston, New York, or Texas — all of which had competitive research ecosystems in the 1950s.

Several factors converged:

Stanford University — Frederick Terman, Stanford's dean of engineering, actively encouraged his students to start companies near the university rather than moving east. He helped Hewlett and Packard start their company in a garage in 1939. He created Stanford Industrial Park — one of the first research parks in the country — and leased land cheaply to technology companies to keep them near the university.

Defense spending — The Cold War poured defense contracts into California, funding technology companies and creating demand for advanced electronics.

Culture — Northern California in the 1950s had a counterculture of anti-establishment thinking that made defecting from a powerful employer to start something new feel less transgressive than it would have in the more hierarchical East Coast corporate culture.

Weather — This is not trivial. Shockley moved there specifically because it was his hometown. The engineers he recruited largely stayed because it was beautiful. The accumulation of talent in one geography created a network effect that compounded over decades.

The Chip That Everything Runs On

In 1971, Intel engineer Ted Hoff designed the Intel 4004 — the first general-purpose microprocessor. A single chip containing all the computational elements of a computer's central processing unit. Before the 4004, computers required rooms full of circuitry. After it, computation could fit in your pocket.

The iPhone you may be reading this on contains approximately 16 billion transistors. In 1971, a state-of-the-art chip contained 2,300. The improvement in density over 55 years — driven relentlessly by Moore's Law — is the greatest sustained technological progress in history.

It started with eight men who couldn't work for William Shockley anymore.

Silicon Valley Today

The region that Shockley, Noyce, Moore, and the Traitorous Eight built now generates more economic value than most countries. The five most valuable companies in the world — Apple, Microsoft, Nvidia, Alphabet, Amazon — are all American technology companies whose existence traces directly to the semiconductor revolution begun in the garages and labs of northern California in the late 1950s.

America didn't plan Silicon Valley. It emerged from a Nobel laureate's personality flaws, eight engineers' courage to quit, and a Stanford dean's vision of what a university's relationship to industry could be.

Two hundred and fifty years of American innovation has no better story than that.