The Null Result and VAR: When the Most Honest Decision Is "Not Enough Evidence"

At the 35th minute of the 2026 World Cup final between France and Croatia, referee Nestor Pitana stepped away from the monitor, turned, and pointed to the penalty spot. The ball had struck Ivan Perisic's hand. The Luzhniki stands split into two halves of noise. What few noticed lay in the VAR room behind: Pitana was shown exactly one camera angle for one minute and forty-seven seconds. That angle showed Perisic's arm extended in what people called an "unnatural" position. The other five angles, had they been shown, might have told a very different story. I have spent most of my career measuring moments like that. What I learned was not "the referee was right" or "the referee was wrong." What I learned is a concept data analysts call the null result. When you do not have enough data to reach a conclusion, the most honest conclusion is "I don't know." In football, we have almost never allowed a referee to say that. A vague clause written in three words The founding principle of VAR is the "clear and obvious error." It sounds simple. But ask: clear to whom, and obvious to what degree? There is no quantification. No centimetre threshold. No number stating that a 15 cm offset is clear while 14 cm is not. The clause exists as a legalised grey zone, and every VAR controversy crawls straight into that grey zone. When IFAB wrote VAR into the Laws in 2026, it designated four reviewable categories: goals, penalties, direct red cards, and mistaken identity. Each carries the condition of a "clear error." The declared philosophy was "minimum interference, maximum benefit." It sounds balanced. But from the 2026 World Cup, the first tournament to deploy VAR at scale, it was clear that "minimum" and "maximum" pull in opposite directions. Every time VAR intervenes, someone says it has gone too far. Every time VAR stays silent, someone says it is useless. What is striking is that before VAR we already had an almost perfect technology: goal-line technology. It answers one question only - has the ball crossed the line? The answer is binary, with no grey zone. And so almost no one argues about it. VAR failed to replicate that clarity because it does not answer a binary question. It answers an interpretive one: was the player deliberate, was the posture natural, was the contact enough to fall? Those are questions with no technical answer. They are questions of intent and degree, and every question of intent ends in a human judgement. The problem is that "clear enough" is not a property of the event. It is a property of the evidence. A phase of play is only clear when the camera angle is good enough, the frame wide enough, the speed slow enough. The same tackle, filmed from 20 degrees off, can look like a foul; filmed square-on, it can look entirely clean. So is the referee judging the event, or judging the quality of the image? That question is not idle philosophy. It decides the outcome of hundreds of matches every season. The error lies at the edge of the frame In 2026, while working as a VAR data analyst for a sports television channel in Chengdu, I reviewed 147 controversial refereeing incidents across 28 rounds of the Chinese top-flight league. I found 12 offside decisions whose errors traced directly to camera placement. That figure sounds dry until you look at one specific case. Round 25, Guangzhou Evergrande against Shanghai SIPG. Wu Lei put the ball in the net. The goal was disallowed for offside. I measured it again from eight different angles and found the actual offset was only about 15 cm - but no camera sat exactly on the horizontal plane of the last defender. When the offside line is drawn from an oblique angle, every centimetre of error in the camera position multiplies into error at the player's position. In other words, a goal was disallowed on the basis of a line that was not itself reliable enough. I found the error not at the centre of the pitch, but at the edge of the frame. From there I began building my own database of "angle error." For every controversial phase, I recorded: how many cameras, where each was placed, the geometric error of each angle, and most importantly - which angles the referee in the VAR room was actually shown. The result surprised me. In most incidents, the referee was never shown all the angles. They were shown the angles the broadcaster chose to air. And the broadcaster chooses angles by broadcasting criteria, not by the criteria of the Laws. This is the point very few fans understand. VAR is not a neutral machine that automatically scans everything. It is a human-run process, with choices about angle, playback speed, and freeze-frame. Every choice is an editorial decision. And every editorial decision can tilt the conclusion in one direction. It took 37 rewatches before I understood that the human eye is not a measuring instrument. There is another detail I found when cross-checking the data: error comes not only from camera position, but from frame rate. Broadcast cameras run at 25 or 50 frames per second. A sprinting player can cover roughly 20 to 25 cm in a single frame at that rate. That means if the decisive frame falls one-twentieth of a second off, the player's position in that frame may differ from the true position by tens of centimetres. For an offside line measured in centimetres, a time error that small is enough to flip the conclusion. And here is the irony: the solution already exists, but only in wealthy competitions. The semi-automated offside system, with dozens of dedicated cameras and a sensor in the ball, debuted at the 2026 World Cup, measuring player positions in real time to millimetre accuracy. But most leagues in the world cannot afford it. They still draw the offside line from broadcast angles, with all the error I have just described. The result is that the same Law, the same phase of play, is judged at two different levels of accuracy depending on the competition. That is not a problem of the Law. It is a problem of infrastructure, and infrastructure is not fair. This is where the null result appears in its purest form. Suppose you have six camera angles. Four show a clean phase. One is ambiguous. One - the one the referee is shown - suggests a foul. So what is the truth? In data terms, you do not have enough evidence to assert a foul. The methodologically correct conclusion is "insufficient grounds to overturn the on-field decision." But that conclusion satisfies no one. Not the fans, not the broadcaster, not the referee himself - who is expected to "make it clear." We thought we were seeking justice. It turns out we were only seeking a prettier camera angle. What is worrying is the pressure to produce a non-null result. A system judged by the number of interventions will tend toward intervening. A referee scrutinised by the media on every decision will tend to make some decision - any decision - rather than stand still. The null result, though correct in method, is read as a sign of hesitation, of weakness, or worse, of concealment. I once witnessed this in a match I prefer not to name. The referee reviewed a collision in the penalty area over and over for four minutes. There were three angles. None showed clear contact. Strictly, he should have upheld the no-penalty decision. But four minutes is too long. The crowd began to jeer. Commentators began to ask questions. And then he awarded the penalty - not because he saw a foul, but because he could not bear to say "not enough evidence" in front of tens of thousands. That was the moment the system failed, not because the technology was poor, but because the human was not permitted to admit uncertainty. Tracing the decision chain A controversial phase is never a single event. It is a chain. There is the player's decision: run or hold, tackle or stand off. The referee's decision: whistle or wave on. VAR's decision: review or not. The broadcaster's decision: which angle to air. The editor's decision: which frame to freeze. And finally the fan's decision: which version to believe. When I analyse an incident, I do not start at the moment of contact. I start six seconds earlier, when the position of the last defender was set. Then I work backwards: who placed the camera where, why, and what was excluded from the frame. That chain is usually longer than people think, and the error is usually not in the final link. It lies in the second or third link, where a small choice shaped everything that followed. This discipline came to me as a young reporter. In 2026, fresh out of journalism school and beginning to write for sports pages, I learned that a good article is not the one that reaches a conclusion fastest. It is the one that shows which link produced that conclusion. Nearly three decades later, across eight World Cups and eight Olympic Games, I still hold to that principle. When "not enough evidence" is a decision, not an evasion There is a deep-seated prejudice: silence is weakness. In football, a referee who upholds a decision after review is called conservative. A referee who overturns it is called brave. But that logic inverts the truth. Overturning a decision on thin evidence is the reckless act. Upholding a decision because you admit you do not have enough data to be certain - that is discipline. The paradox is this: fans come to the stadium to watch football, but they judge VAR with the eyes of a court. They want a decisive verdict, guilty or innocent, with no grey zone. Football does not work that way. Football works on probability. A tackle can be 60 percent a foul and 40 percent clean. The on-field referee makes an instant judgement on that 60 percent. VAR may only intervene when the number crosses a threshold no one can define. And when the number sits in between, the null result is the correct answer. I do not believe in referees who have never hesitated. I believe in referees who dare to say on camera that they need more evidence. At 45, after reviewing thousands of incidents, I have come to see that imperfection is not a fault of the system. It is the nature of applying Law to human movement, at real speed, under real light, through angles that are never enough. There is another paradox rarely mentioned. Metrics of distance covered and sprint counts are packaged as measures of effort. But running in vain also produces handsome numbers. A player who covers 12 km in a match may simply be chasing the ball and never reaching it. A player who covers 9 km may have closed every gap. Data does not speak the truth by itself; it speaks only what someone chose to measure. VAR is the same. We measure interventions, review minutes, and the rate of overturned decisions. But we do not measure the times a referee was right to uphold a decision for lack of evidence. In closing: transparency is not publishing the verdict, it is publishing the data The empty stadiums of 2026 showed me this: VAR does not save football, it exposes football. With no crowd to drown out the silences, people heard more clearly the referee sighing at the monitor. And they understood that behind every offside line is a chain of human decisions, not a digital truth. If I could propose one reform, it would not be more cameras or higher resolution. It would be publishing the data. When VAR concludes "insufficient evidence to overturn," tell the fans how many angles there were, what the measurement error was, and why the intervention threshold was not met. Transparency is not delivering a firm verdict. Transparency is showing people the gaps in the data too. The null result is not a failure. It is an honest admission that we can only judge within the limits of what we can see. The remaining question is: will we have the courage to acknowledge those limits in front of tens of thousands of fans, or will we keep awarding penalties just to end four minutes of uncomfortable silence?