MELBOURNE, AUSTRALIA—Tracing the unique behavior back to the dawn of civilization, researchers at Monash University announced Wednesday that lowering one’s voice to discuss a person’s sexual orientation is a physiological trait that evolved in humans over thousands of years.
- Inclined Plane: A simple machine consisting of a flat surface whose topmost point is higher than its bottommost point, this is yet another example of mankind's propensity for "inventing" things they just found lying around.
- Telephone: This groundbreaking communication device allowed people a more dramatic way to end conversations with subordinates or lovers, and also played a key role in Martin Scorcese's film The Departed.
- Printing Press: The mass production of printed matter was an instant hit with readers everywhere, who at the time numbered nearly 1,000 and were spread out over some 57.4 million square miles.
- Easy Cheese: A pioneering aerosol-powered food- delivery system that made it possible for people to discharge high-velocity streams of cheese directly into their mouths, usually from a prone or inverted position.
- God: This multipurpose tool has allowed billions to soothe their mortal fears while easily excusing a wide variety of unconscionable actions such as war and homophobia.
- Gatling Gun: Capable of firing 200 rounds a minute, this powerful weapon was a vast improvement over its less lethal predecessor, the Gatling Baton.