Stop pretending the clock can split a dead heat

Timing gear resolves finishes far finer than it publishes, and the sport is right to refuse the extra digit.

Two sprinters cross a line in the same thousandth of a second and the sport declares them equal. Every time this happens, somebody asks why the timing system does not simply zoom in further. It can. The image is captured at thousands of frames per second and the underlying data would happily give you a fourth decimal place.

The reason it is not used is that the fourth decimal would be measuring the wrong thing.

A photo finish reads a torso crossing a vertical plane. At ten metres per second, one ten-thousandth of a second is a millimetre. Starting blocks are not positioned to a millimetre. Lane markings were painted by a person. The finish plane is defined by the leading edge of a line whose width is itself a measurable quantity, and track construction tolerances run to centimetres over the length of a straight. Publishing a result to a precision finer than the geometry of the building is not accuracy. It is decoration.

Swimming is the honest case here. Touchpads are certified to hundredths and the sport has repeatedly refused to move to thousandths, on the stated grounds that a pool cannot be built to the tolerance a thousandth of a second in water would imply. Lane lengths differ by fractions of a millimetre. So two swimmers share a gold, both anthems play, and the sport accepts the small indignity of a tie rather than the larger indignity of awarding a medal on construction error.

Athletics goes one decimal further and then, in the events where it matters most, applies judgment anyway. Where the automatic system cannot separate two athletes, officials examine the image and rank them if the images are distinguishable, even when the published times are identical. That is a quiet admission that the number is a summary, not the verdict.

I would rather the sports were louder about this. Explain, on screen, that timing precision is bounded by the building. Say it in the same breath as the result. The audience is not fragile, and the alternative is a slow erosion of trust every time a shared medal looks like an administrative failure.

A dead heat is not the technology falling short. It is the technology being told, correctly, where to stop.