The image is from https://crabsman.com/crab-bushel-basket/.

Anyone who has ever fished for crabs knows that you must remember to cover the bamboo basket when you put a crab in it. A single crab will always try to climb out. However, if you catch a few more crabs and put them in, you don’t have to put the lid on the basket anymore. Now, no matter how hard the crab tries, it can’t get out.

Why is that?

Each crab scrambles for the exit. When one crab gets to the top of the basket, the others grab it with their claws and drag it to the bottom. Then another crab climbs up on top of the pile, and the process is repeated.

This is also the mentality of many people in today’s society: when they are unhappy, they also want others to be depressed. Like the crabs, we wish to drag others down to our level. To be envious and ashamed of others are the greatest follies of human nature.

There is a minor, yet very significant difference between heaven and hell. In these places, God gives everyone a spoon with a long handle with which to share a large saucepan full of food. In hell, people only noticed that the spoon was too long to put food into their mouths; in heaven, people used their spoons to feed each other. Wherever a selfish man goes, hell will follow him.

《螃蟹定律》(螃蟹效應)

釣過螃蟹的人都知道，竹簍內放一隻螃蟹，必須要記得蓋上蓋子，否則它就會爬出來。但是如果你多釣幾隻放進去後，就不必再蓋上蓋子了，這時螃蟹再怎麼掙扎，也是爬不出來了…

為什麼？

因為當有兩隻以上的螃蟹在簍子裡，每一隻都爭先恐後地朝出口處爬。但當一隻螃蟹爬到簍口時，其餘的螃蟹就會用鉗子抓住它，把它拖到下層，由另一隻螃蟹踩著它向上爬。如此循環，沒有一隻螃蟹能夠成功。

這也是現在社會上很多人的心態：自己過得不開心，就想看到別人也不開心；如果自己爬不上去，也拉住別人，讓別人也爬不上去。見不得別人好，是人性最大的愚蠢。

天堂與地獄的差別：上帝給每個人一支柄部很長的杓子，共食裝滿了食物的大燉鍋。地獄裏衆人因杓子過長，無法將食物送入自己的嘴裏；而天堂裏衆人卻用長杓子互相餵食。自私的人，所到之處皆是地獄。