Where do lily-livered, carpetbagger, mad as a hatter, pleased as punch, turncoat, bigwig, rule of thumb, and skeleton in the cupboard come from? All of these expressions have fascinating origin stories. Let’s look at them one by one. Lily-livered is a British phrase that means someone is cowardly. If you are not British, you may […]
Why can’t we walk in a straight line with our eyes closed? We can’t walk in a straight line with our eyes closed because our brain depends on visual cues, and without an external reference point, small random errors in the body’s sense of “straight ahead” build up over time, and the brain has nothing
#1560 Why can’t we walk in a straight line with our eyes closed? Read More »
When did cigarettes become mainstream? Cigarettes increased in popularity after their manufacture was automated, but they became mainstream after World War 1. Tobacco wasn’t known in Europe until the Spanish brought it back from South America in the 15th century. Before tobacco arrived, people in Europe had other drugs to smoke, but they were more
#1559 When did cigarettes become mainstream? Read More »
Why did people stop using castles? People stopped using castles because they were hard to defend as warfare changed, feudalism ended, they were expensive, and they were not very comfortable. Castles evolved from forts, which in turn evolved from rough fortifications. In fact, the word castle comes from the Latin word “castrum”, which means “fortified
#1558 Why did people stop using castles? Read More »
What is the bullwhip effect? The bullwhip effect is where a small change in consumer spending can lead to a very large fluctuation down the supply line. It is one of the causes of overproduction and waste. It is called the bullwhip effect because a small flick on the handle of a whip can lead
#1557 What is the bullwhip effect? Read More »
Why did Copernicus decide that the sun was at the center of the solar system? Copernicus decided that the sun was at the center of the solar system because it made the most sense when he observed the motion of the other planets. Nicolaus Copernicus was born in Poland in 1473. He was very well
#1556 Why did Copernicus decide that the sun was at the center of the solar system? Read More »
What is pasteurization? Pasteurization is the process of heating food to reduce harmful microbes and slow spoilage, giving it a longer shelf life. The process is named after Louis Pasteur, although people had been using heat to preserve food and drink long before him. We tend to associate pasteurization with the milk industry, but all
#1555 What is pasteurization? Read More »
What happened to JFK’s sister? JFK’s sister, Rosemary Kennedy, was permanently incapacitated by a failed lobotomy in 1941, leaving her with the mental age of a two-year-old. Rosemary Kennedy was the third of nine children born to Joseph P. Kennedy and his wife Rose Fitzgerald. They are known as the Kennedy family, and Rosemary was
#1554 What happened to JFK’s sister? Read More »
How does slipstreaming work? Slipstreaming works because one vehicle drives closely behind another so that it can ride in the low-pressure wake that follows the first vehicle, reducing the air resistance and reducing the amount of power needed. Unless you are moving in a vacuum, you are going to come up against air resistance. We
#1553 How does slipstreaming work? Read More »
What was the gold standard? The gold standard was a system that tied the value of a country’s currency to a fixed amount of gold. It is often said that it ended in 1971, because that was when the United States stopped converting dollars into gold for foreign governments and central banks, which was the
#1552 What was the gold standard? Read More »
