Saturday, December 5, 2015

The world’s costliest typos

Typos can be a lot more than just embarrassing.

Mental Floss has compiled a list of possibly the most expensive typos in the world.
This is why it’s important for everyone to proofread any important document or email before hitting send.

My personal favorite story is the missing hyphen in the coding of NASA’s Mariner I space probe. Five minutes after launch the Mariner had to be recalled because of that missing hyphen which had the spacecraft veering off course. That cost around $80 million. (

Then there was the car dealership that mailed out 50,000 scratch tickets, one of which was supposed to be worth $1000. Instead ALL of them were winners. That made a total of $50 million which the car dealership, not surprisingly, was unable to pay.

In a typo costing half a million dollars, New York City’s Transportation Authority had to recall 160,000 maps and posters that announced the recent hike for the minimum amount put on pay-per-ride cards from $4.50 to $5.00. The only problem was they said the new price was $4.50.

You can read more typo stories here ( But to avoid starring in one of them yourself, always proofread your documents!

Helen Woodall

Helen is available to line edit and/ or content edit fiction and non-fiction. Rates on application.

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