Taekwondo

Taekwondo has automated more of its central judgement than any other sport on this site, including tennis, and the comparison with tennis is the useful one.

Tennis automated a question about where an object was — a ball, a line, a fact with a correct answer. Taekwondo automated a question about how hard a person was hit, which is a physical quantity but was previously an opinion. Before 2009 a point existed because judges agreed; after 2009 it exists because a sensor exceeded a threshold.

That is why this sport appears in the adjudication lens as combat rather than judged, and why it is the only sport here that changed what kind of sport it is. The instrument did it.

What the officials kept is instructive. The referee still runs the contest and awards gam-jeom, the penalty that scores directly for the opponent — and because penalties can decide contests, that is now where the disputes live. Video review, formalised in 2017, exists almost entirely for penalties and for techniques the system did not register.

There is also a threshold problem no other sport has. A sensor scores above a set force, and that force is set by the federation, differently for different weight categories. So the sport has a dial that determines how hard a kick must be to count — and turning it changes the results. No official is involved in that decision at all; it is made in advance, in a specification.

That is the same structural fact as modern pentathlon's points tables and gymnastics' difficulty values: a number written in an office doing work an official does elsewhere.

Taekwondo has the widest national spread of any combat sport on this site and one of the most even elite distributions of any sport here at all. Medals at recent Games have gone to competitors from more than twenty countries, including several with almost no other Olympic success.

The reason is the syllabus. Taekwondo was designed to be taught, exported deliberately from South Korea from the 1960s onwards, and organised as a graded curriculum that works in a rented hall with an instructor and no equipment. It is one of the most widely practised martial arts in the world, and its club structure exists almost everywhere.

South Korea remains the strongest nation but by a much smaller margin than in comparable cases: table tennis has China, archery has South Korea, and both margins are far larger. Iran, Turkey, China, Spain, Great Britain, Croatia, Serbia, Ivory Coast, Niger, Jordan, Thailand and Uzbekistan have all produced Olympic champions.

Two of those are worth stating plainly. Ivory Coast's first Olympic gold medal in any sport came in taekwondo, as did Jordan's and Niger's first medals. A sport with a low facility requirement and a portable curriculum produces first-time medallists in a way that pool sports and equestrian sports cannot.

The electronic scoring system had a geographic effect too, and a positive one: a sport whose results depended on judges' agreement was open to the suspicion that the judges favoured established nations. A sensor is not.

Taekwondo is the newest sport on this site by a wide margin and one of the few whose creation was an act of state.

It was assembled in South Korea in the 1950s from Korean martial traditions and from Japanese karate, which had been taught in Korea during the occupation. The name was settled in 1955, and the unification of competing schools into a single system was pursued deliberately with government support — a national martial art was an instrument of cultural identity after occupation and war.

The World Taekwondo Federation was founded in 1973 with headquarters in Seoul, and the Kukkiwon serves as the technical and grading authority. Taekwondo became a demonstration sport at the 1988 Games in Seoul and a full medal sport in 2000.

That origin explains a structural feature the rest of this page depends on. Taekwondo was designed as a syllabus — a graded curriculum with forms, techniques and belts, intended to be taught to large numbers of people — before it was designed as a spectator sport. The competitive sparring discipline is one component of it, and the elite version of that component has since diverged very far from what most practitioners do.

No other sport here has that shape. Judo has a syllabus too, but its competition remains recognisably the same activity. Taekwondo's does not.

Taekwondo has the shortest and most consequential equipment history on this site, because in 2009 its protective equipment stopped being protective equipment and became a measuring instrument.

Before that, the trunk protector was padding. Scoring was done by four judges with handheld buttons, and a point existed when enough of them agreed within a fraction of a second. The equipment had nothing to do with it.

The Protector and Scoring System put sensors in the trunk protector, magnetic sensors in the athlete's socks so the system can distinguish a foot from a knee or a glove, and later sensors in the head protector. A valid contact above a force threshold registers automatically.

This is a larger change than it sounds, and its consequences fill the rest of this page. It moved the sport from judged to measured — the only such crossing on this site. It made the equipment specification into a scoring rule, so changing a threshold changes what wins. And it immediately produced an optimisation problem: competitors found the cheapest reliable way to trigger a sensor, which was a low kick to the trunk, and the sport became repetitive.

The federation's response was not to change the hardware but to change the prices — head kicks and spinning techniques worth more — which is the same instrument gymnastics uses.

The octagonal court in 2011 is the other equipment change, and it was aimed at the same problem from a different direction: remove the corners, shrink the area, make disengagement harder.

Taekwondo's governance is dominated by two facts: its Olympic place was under genuine threat, and it has an unusually close relationship with one country.

The threat was real and recent. Judging at the 2008 Games was widely disputed, and the sport was named in Olympic programme reviews as a candidate for removal. The electronic scoring system introduced the following year is best understood as an answer to that: a federation demonstrating that its results could be verified by something other than its own officials.

It is a strikingly effective example of a governing body solving a credibility problem with hardware rather than with process. Gymnastics faced a comparable crisis in 2004 and answered it by splitting its judging panel and monitoring judges statistically — keeping the humans and auditing them. Taekwondo removed the humans from the part that could be measured.

The other permanent feature is Korea. The Kukkiwon in Seoul is the technical and grading authority for the martial art worldwide, separate from World Taekwondo, which governs the sport. That is a split with no exact parallel here — judo's Kodokan is the closest — and it means the definition of the practice and the rules of the competition sit in different institutions.

A political footnote worth recording: taekwondo has been used repeatedly as a diplomatic instrument between North and South Korea, with joint demonstration teams appearing at major events, which puts it alongside table tennis as a sport that has done foreign policy.

Beijing, 2008. Judging across the taekwondo competition was widely disputed, and the sport's continued Olympic status became a live question. Four judges pressing buttons within a fraction of a second of each other produced results that competitors could not verify and spectators could not follow, and there was no mechanism to check them.

The response, within a year, was to install sensors. That is the most decisive answer to a judging crisis anywhere in this collection — and it worked, in the narrow sense that scoring disputes about body contact essentially stopped.

What the sensors produced. Immediately, a different problem. If a point exists when a sensor registers enough force, the rational strategy is the cheapest contact that clears the threshold, which turned out to be a low, repetitive kick to the trunk. The sport became visually monotonous within a season.

The federation's answer was to re-price: head kicks worth substantially more, spinning and turning techniques worth more again. That is the Code of Points instrument — deciding what the sport should look like and paying for it — applied to a combat sport.

The corners. Competitors ahead on points used the square area's corners and size to avoid engaging. The octagon in 2011 removed the corners and shrank the space.

Holding a lead. Still not solved by 2022, when the contest stopped being cumulative and became best of three rounds. A competitor can now outscore an opponent across a match and lose, which is exactly what archery did in 2011 and attracts exactly the same objection.

Recorded as unsettled.

Whether automation improved the sport. The sensors ended the judging crisis, and almost nobody wants to go back. But they also produced a decade of rule changes chasing the optimisation they created — re-pricing the point table, shrinking the court, and finally abandoning cumulative scoring in 2022. Whether a sport that must keep redesigning itself around its own instrument is better governed or worse is genuinely argued.

The force threshold. A number set by the federation determines how hard a kick must be to count, and it is set differently by weight category. It is a consequential rule that receives almost none of the scrutiny a playing rule would, and changing it changes who wins.

Best of three. As in archery, a competitor can score more across a contest and lose it. Supporters say it keeps every round live; opponents say a combat sport should be won by the person who did more.

The gap between the sport and the martial art. Millions of people practise taekwondo as a graded syllabus of forms and technique. Olympic sparring has diverged far enough from that to be a different activity, and there is a real argument within the sport that the Olympic version has stopped representing what the discipline is.

Head kicks and safety. Raising the value of head contact was a scoring decision, and its consequence is more head contact. The sport has sensor- equipped head protectors and has not published a settled position on the long-term risk.