An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
The cigarette lighter was invented before the match.
210
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250
Whale oil was used in automobile transmissions as late as 1973.
56
The ball on top of a flagpole is called a 'truck'.
24