How a Typo Cost Millions

On February 20, 2009, the UK company registrar entered a record saying an engineering firm in Cardiff had been dissolved. In fact, it was another company that had been dissolved - one from another city, with an almost identical name but no final "s." One letter entered on the wrong line.

The register is a source people don't usually double-check: banks, insurers, and agencies that vet business partners pull data from it automatically. The record spread through their reports almost immediately. The error was found and corrected within 3 days - but no one recalled the copies. Orders were canceled, banks closed credit lines, and within weeks the business was gone. The court recognized that the collapse began with the register entry.

A typo in a letter stays a typo: the reader pauses and understands what you meant. A typo in a database becomes a fact. A record has no tone and no doubt - "dissolved" sounds equally certain whether it's true or a data-entry error.

What happens next isn't bad intent but ordinary caution. A supplier who sees that notice doesn't call to check - she simply stops shipping. Each person acts reasonably on her own; together, within a couple of weeks, they do what no one would deliberately do.

The same mechanism works anywhere a symbol is copied without being reread: in a typesetter's case, a line of code, or a stock exchange order. The scale depends not on the size of the error, but on how many systems take it on trust.

In a 1631 London edition of the Bible, the word "not" dropped out of a commandment: nearly the whole print run was burned, and the printers lost their royal license. In 1962, a bar over a symbol - the sign for data smoothing - was lost from the guidance equation for an interplanetary probe, and the rocket was destroyed less than 5 minutes after launch. In 2005, a trader in Tokyo switched the number of shares and the price in an order, and the exchange wouldn't let him cancel it.

This is why it's worth taking a second: before saving a line about another person or company, reread that specific line. Not the whole document - the line you're saving.