Here is a possible concise summary:
This is a transcript of a video that talks about eight things you didn't know, such as:
- The effect of feeling that someone is looking at you from behind, which is a psychological phenomenon and not a psychic power.
- The apache revolver, a strange weapon that combined a knife, a revolver and a brass knuckle, and was used by criminals in the 19th century.
- The myth of sword fighting, which explains how real sword fights were different from what movies show, and how some techniques involved holding the blade with one hand and hitting with the handle.
- The reduced foods, which are products that have been shrinking in size or quantity over time, while keeping the same packaging and price, such as Toblerone, Pringles and KitKat.
- The Google workers, who have a great deal with their company, which includes receiving 50% of their salary for 10 years and an extra 1000 per month for each minor child if they die.
- The silent disco, which is a party where everyone wears headphones and listens to the same music, but from the outside it looks like a bunch of people dancing without music.
Here are some possible facts extracted from the text:
1. The effect of the look in the back of the head is a sensation that some people claim to have, but it is not a psychic power, but a mixture of psychology and logic.
2. Fisher conducted an experiment in 1955 with three groups of puppies that received different treatments, and found that the group that received random punishments and pampering developed the most attachment to the researchers.
3. The apache revolver was a weapon that had a knife, a revolver and a brass knuckle, and was used by criminals to stab and shoot at the same time.
4. Sword fighting in Western states was not a cluster of sweeps with the blade, but a more complex and varied style that involved holding the sword with two hands, one on the handle and the other on the blade, and hitting with the handle or the flat part of the blade.
5. Some companies have reduced the size of their products while maintaining the same packaging and price, such as Toblerone, Pringles and KitKat.
6. Google has a deal with their workers that if they die, they give their family members 50 percent of their salary for 10 years and an extra 1000 every month for each minor child until they are 19 years old.
7. A silent disco is a place where everyone wears headphones and listens to music, while from the outside it looks like a party without music.