01 Starting advantages
5/24 starting-position score
Strongest documented signals: Elite institution pipeline, Frontier geography, Direct domain exposure.
Describes the starting position, not what the person later made of it.
Cohort percentile: 15
Yoo Nam-kyu
Athletes · Tennis · milestone at age 20 ·T2 Field-leading
Milestone (age 20)
Won Olympic gold medal in men's singles table tennis at the 1988 Seoul Olympics at age 20, the first time table tennis was included in the Olympics.
Yoo was born in Busan, the second of three siblings. He discovered table tennis in 4th grade when his school formed a team — he joined to impress a girl he liked, despite having no prior interest. He beat a player with a year's more experience, which got him noticed. Parents strongly opposed athletics, wanting him to become a doctor, but relented after he threatened to take up boxing. He trained obsessively, even eating with table tennis grips, and by 6th grade was ranked first. He was selected as the youngest national team member in his third year of middle school.
Starting point
Born in Busan, South Korea, the second of three siblings; parents were not sports people and wanted him to become a doctor; working-class family.
Current position (2025)
Retired from competitive table tennis; served as coach and administrator in South Korean table tennis. Resides in South Korea.
How this path compounded
02 Built or converted leverage
12/25 multiplying-capacity score
Strongest observed levers:Started serious reps before 20, Prior reps, Scarce skill depth.
Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
Cohort percentile: 58
03 Compounding trajectory
5 documented steps
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.
Milestone at age 20
04 Observed career standing
T2 · Field-leading
Dominant figure at the top of a field. The tier summarizes documented career recognition through the data cutoff—not Yoo Nam-kyu's worth or future potential.
Question four · where did the leverage come from?
Yoo Nam-kyu's leverage provenance
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.
Started serious reps before 201/1
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Elite institution pipeline (1/2)
Prior reps2/3
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Elite institution pipeline (1/2)
Scarce skill depth2/3
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Elite institution pipeline (1/2)
Structural wave / timing2/3
Externalmedium confidence
A structural wave is external to the person, even when their position improved access to it.
Frontier geography (1/2)
Concentration intensity2/3
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Adversity / constraint catalyst (1/2)
Complementary team1/2
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Elite institution pipeline (1/2)
Domain proximity1/2
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Direct domain exposure (1/2)Frontier geography (1/2)Elite institution pipeline (1/2)
Elite ecosystem network1/3
Advantage-enabledmedium confidence
One or more documented starting advantages plausibly enabled this lever.
Elite institution pipeline (1/2)Frontier geography (1/2)
This is a bounded inference from the current annotations—not a claim about private effort, merit, or the percentage of Yoo Nam-kyu'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.
Within Athletes, Yoo Nam-kyu's starting-advantage total is at the 15th percentile. Separately, their built or converted leverage total is at the 58th percentile. Other T2 profiles average 7.9 / 24 starting advantage and 12.3 / 25 leverage. Similar scores appear in other tiers, so these figures describe positioning—not a cause.
Trajectory
- 1986 · age 18Won Asian Games gold medals in both singles and team events in Seoul.
- 1988 · age 20Won Olympic gold medal in men's singles at the Seoul OlympicsThe first Olympic table tennis gold medalist.
- 1989 · age 21Won World Championship gold in mixed doublesHyun Jung-hwa at Dortmund.
- 1992 · age 24Won Olympic bronze in men's doublesThe Barcelona Olympics.
- 1996 · age 28Won Olympic bronze in men's doubles at the Atlanta OlympicsCompleting a three-Olympics medal streak.
Primary leverage engine
Early specialization
Early specialization / prior reps
Secondary engine
Physical talent
Built/converted leverage
12 / 25
evidence: Medium
Built or converted leverage
Multiplying capacity documented later in the path. Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
Starting-advantage scores (0–2 each)
Access or conditions documented near the beginning of the path. Zero means "no clear evidence in reviewed sources," not "advantage was absent."
Family context
Born in Busan, South Korea (Yeongseon-dong, Yeongdo-gu), the second of three siblings. Parents initially opposed his table tennis career, wanting him to become a doctor; they relented only after he threatened to take up boxing instead.
Parent / family domain
No sports background in the family; parents wanted him to pursue education and a stable profession (medicine), not athletics. Parents consulted a fortune teller who predicted success, which eventually softened their opposition.
Archetype & tags
Elite performance pipelineinternational competition exposureOlympic debut sportAsian Games championSwedish league experience
Evidence summary
Yoo Nam-kyu was born in Busan, South Korea, the second of three siblings. His parents had no sports background and strongly opposed his table tennis career, wanting him to become a doctor. They consulted a fortune teller who predicted success, and eventually relented after Yoo threatened to take up boxing. He discovered table tennis in 4th grade to impress a girl, beat more experienced players, and trained obsessively — even eating with table tennis grips. He was the youngest national team member in middle school, won Asian Games gold at 18, and Olympic gold at 20. His early advantages were self-created domain repetition and constraint-driven determination against parental opposition, not family resources or domain inheritance.
advantage confidence: Medium · source count: 3 · audit: not_independently_audited · status: subagent_researched_beta
Sources
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