Here is a joke about company policy which my lecturer shared with me. It is applicable to many aspects of our life. ^_^
10 monkeys are put into a cage. Inside the cage, a bunch of bananas is hanging on a string and a set of stairs was placed under it. Before long, a monkey goes to the stairs and starts to climb towards the bananas. As soon as he touches the stairs, all of the other monkeys are sprayed with cold water. After a while, another monkey makes an attempt and faces with the same result -- and all the other monkeys are sprayed with cold water. Pretty soon, any monkey that tries to climb the stairs, will be beaten up by the other monkeys as they do not want to be spray.
Eventually one monkey is removed from the cage and is replaced with a new one. The new monkey sees the banana and wonders why no one is trying to get it. He attempts to climb the stairs and to his surprise and horror, all of the other monkeys attack him. After another attempt and attack, he knows that if he tries to climb the stairs, he will be assaulted.
Next, another of the original ten monkeys is replaced by a new monkey. The newcomer goes to the stairs and is attacked. The previous newcomer takes part in the punishment with enthusiasm! Not knowing why he is joining the beating but feeling glad that he is not the target this time round.
Likewise, the third original monkey was replaced with a new one, then a fourth, then the fifth. Every time the newest monkey takes to the stairs, he is attacked. Most of the monkeys that are beating him have no idea why they were not permitted to climb the stairs or why they are participating in the beating of the newest monkey.
After replacing all the original monkeys, none of the remaining monkeys have ever been sprayed with cold water. Nevertheless, no monkey ever again approaches the stairs to try for the banana. Why not? Because as far as they know, that's the way it has always been done around here.
And that, my friends, is how a belief comes into place. Look at company policy, commercials, movies, superstitions, religion belief, culture belief…. No one asked why and just blindly accepted what they were told to believe in. Because That’s the way it is.