One common myth about money is falling into the fairness trap with value relativity. When the quality of work is hard to judge, we tend to value those who work longer and harder more highly. This is a fairness trap. A novice locksmith might take a long time to open a locked door, while an experienced one can do it instantly. People often pay higher wages to novice locksmiths who have spent more time working. Even if the lock is damaged due to clumsy work and they are charged for replacement, people might still tip because the locksmith worked hard and did his best for a long time. When paying for something that’s difficult to evaluate, people care about fairness. But the real reason to call a locksmith is to avoid the embarrassing situation of being unable to enter the house quickly. I don’t know if this is true, but a woman once asked Picasso to draw her portrait, and he did it in 30 seconds. When she asked how much she should pay, Picasso said her $500. She complained that this was o...
"Apples are the fruit" is a true proposition. At this time, "apples" are a Sufficient Condition to be fruit, and vice versa, because the "fruit to be an apple is more necessary for other conditions such as "red, round", the fruit is a Necessary Condition to become an apple. If the proposition of "If you respect someone, you'll get married" is "true," it's a "Sufficient Condition" to find someone you admire for marriage, but it's just only a "Necessary Condition" to find someone to marry for respect. Even with respect, you can not get married. You can't get married even if the Reverse Proposition is "true." Because marriage is a matter of "choice" before conditions or needs. If you want a respectable man, you can find a great man. To live comfortably, you can find a rich man. So, is there no Necessary-Sufficient Proposition for a marriage (conditions where both the proposition ...