Christa Pike Is Believed to Be the Only Known Person to Survive a Lethal Injection

Christa Pike, a US death row inmate, is believed to be the only known person to survive a lethal injection, the BBC reports. Experts and lawyers described her apparent recovery as unprecedented.

The hedge sits inside the claim itself — "believed to be the only known" — rather than in a statistic. It is not a distinction anyone would set out to hold.