15 Worst Inventions of All Time

 

To really invent something great, you have to give yourself permission to fail. It’s safe to say there have been a lot of failures out there: spam email, motorcycle perfume, fish training kits, fire-prone hoverboards and spray-on hair are among the worst inventions on record. Come on, people. You can do better.

 

Click ahead to see the worst inventions of all time!

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