Documented path
Son moved from Japan to the United States at age 16 to attend high school and enrolled at UC Berkeley. While still a student, he invented an electronic translator and sold the patent to Sharp for approximately $1 million at age 20, then founded SoftBank in 1981 at age 23 as a software distributor.
Born to Zainichi Korean parents in a tin shack in Tosu, Saga Prefecture; father raised pigs and chickens and ran an illegal sake business; family faced severe ethnic discrimination.
Chairman and CEO of SoftBank Group; net worth approximately $30 billion; resides in Tokyo, Japan.
Where the conditions came from
Each is placed on a −1 to 3 scale from documented evidence, and the three are never added together. A combined total would rank Masayoshi Son against other people. Held apart, they explain why this path ran differently from another one—which is the only comparison this project supports.
The marble itself
+2Tailwind
What capability, drive, or early skill is documented in the person rather than their surroundings?
Made his first $1 million at 20 by inventing an electronic translator and selling the patent to Sharp, demonstrating exceptional entrepreneurial instinct and technological foresight. His intense focus and ability to identify the microchip revolution show significant cognitive and business endowment.
Where it was dropped
-1Active headwind
What money, family standing, network, or permission was already in place before the work began?
Born to Zainichi Korean parents in extreme poverty in Tosu, Japan, living in a tin shack with pigs and facing ethnic discrimination. Father raised pigs and chickens and ran an illegal sake business. Active poverty, ethnic discrimination, and social marginalization.
The shape of the track
+2Tailwind
What place, timing, institution, or peer group made the next step available?
Moved to the US at 16 to attend high school and enrolled at UC Berkeley, where he was inspired by the microchip revolution. The PC revolution provided a structural wave, and UC Berkeley gave access to Silicon Valley's emerging tech ecosystem. Strong timing and institutional access despite disadvantaged origins.
A −1 is a documented headwind, not a missing value; a 0 means the sources record nothing notable either way. Annotation confidence: High. These are analyst readings of what the sources record, not measurements of merit, talent, or effort. The twenty-two scored dimensions remain available inside the deeper research detail.
What moved through the conditions
Silence in a biography is not evidence that perseverance was absent.
This is an unchosen opening or condition in the record, not an estimate of how much luck caused the outcome.
Strongest documented signals: Adversity / constraint catalyst, Elite institution pipeline, Frontier geography.
Describes the starting position, not what the person later made of it.
Strongest observed levers: Started serious reps before 20, Structural wave / timing, Concentration intensity.
Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
The timeline below shows the sequence of work and transitions around the selected early milestone. It is evidence of a path, not proof that every step was necessary.
Legendary or globally iconic career standing. The tier summarizes documented career recognition through the data cutoff—not Masayoshi Son's worth or future potential.
Question four · where did the leverage come from?
Each non-zero lever gets a best-supported origin, evidence signals, and confidence. Unresolved is the honest default when the biography cannot distinguish self-built, advantage-enabled, earned, external, or mixed.
One or more documented starting advantages plausibly enabled this lever.
A structural wave is external to the person, even when their position improved access to it.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
This is a bounded inference from the current annotations—not a claim about private effort, merit, or the percentage of Masayoshi Son's outcome attributable to any origin.
Structural luck, Encounter luck, Event luck, Outcome variance can change every arrow in the path. This successful-only dataset cannot observe the near-identical paths that did not break through, so luck stays visible and unscored.
Multiplying capacity documented later in the path. Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
Access or conditions documented near the beginning of the path. Zero means "no clear evidence in reviewed sources," not "advantage was absent."
Born to Zainichi Korean parents in extreme poverty in Tosu, Saga Prefecture; father raised pigs and chickens and ran an illegal sake business; family faced discrimination as ethnic Koreans in Japan.
Not documented in reviewed sources.
Son was born to Zainichi Korean parents in extreme poverty in Tosu, Japan, living in a tin shack with pigs and facing ethnic discrimination. At age 16, he moved to the United States to attend high school and enrolled at UC Berkeley, where he was inspired by the microchip revolution. He made his first $1 million at age 20 by inventing an electronic translator and selling the patent to Sharp Corporation. He founded SoftBank in 1981 at age 23 as a software distributor, riding the personal computer wave. His early success was driven by intense focus, technological timing, and an adversity-forged determination rather than family resources or networks.
advantage confidence: High · source count: 3 · audit: source_verified · status: subagent_researched_beta