Rarest Things In The World

A woman solving 893 times 61 in her head in seconds is described in the episode as a "superhuman ability" that occurs in roughly one in ten million people. That clip is the midpoint of a video that counts down from the most common rare traits to the most rare event documented in the last 250 years. The throughline is not just a list of oddities — it is an exploration of how rarity is distributed across biology, genetics, chance, and weather, and how easily a person can encounter something extraordinary without realizing it.

Hypermobility and Common Rarities

The episode opens with a demonstration of a person spinning their arm in a full 360-degree rotation, popping the shoulder out of its socket and back in. This is hypermobility, often called being double-jointed or triple-jointed. The host notes that one in five people have some form of hypermobility, making it surprisingly common. A related clip shows a man bending his hand backward to grab a cup from the opposite direction. The host points out that this condition is often genetic and can be used to prank people — pretending to break an arm to get out of an obligation. The takeaway is clear: what looks like a freakish ability is actually a normal variation present in a substantial minority of the population.

Genetic Anomalies and Birth Defects