The lowly Limpet, also known locally as a China Cap, has a tongue or 'radula' covered in tiny teeth that scrape away at a rock's surface, and is now considered the strongest biologically created structure. You can collect, after getting a shell fish license, and eat limpets, but having attempted this, to make limpet stew, its just too much work and you need a lot of limpets.
Native Americans, practiced both slavery and upheld a form of upper class nobility. At least they did in the PNW.
Because slave raids were fairly common, they had to differentiate COMMONS from the nobility. To do this they would place an infant's head in sort of a vice, that would flatten the forehead, while the bones of the skull were still some what plastic. These persons, with their obviously slopped heads were off limits to being taken as slaves. During a Potlack, the host family would attempt to impress visitors with what they could "Throw Away." During these events, many of the slaves were killed as a demonstration of wealth.
Diamonds are not all that rare. Even big four carat ones. Its an entirely artificial market created by Debeers. They have vast storage facilities of large diamonds, yet only release a few at a time.
During the tulip bubble of the
1600s, a single bulb of the rarest kind, could sell for as much as an entire house.
Most every thing you buy over the counter at your local store, for controlling coughs and colds, was once a patented formula sold by fakes. And most of those once contained
camphorated opium. Doctors in the 40's and 50's routinely would give out a free cough syrup. Which contained Opium.
The larger the set, The more things become fun. One person flipping a coin will find it is about 50-50. Take a thousand people and ask them to flip a coin. Bad choice and you are eliminated. But some one might guess well and be correct all the way to be the winner. Are they lucky?
Do it again, and its most likely a different person that wins. Is that person now lucky?