By chance, nothing happens ...
There is a secret meaning of the laws of existence.
It is written: who searches, that will find
And who is knocking, the door will be opened for him.

Why Do We Apologize?

My hypothesis is that apologies are a way for humans to determine their status in society. A king and queen never apologize for their actions because they don't need to. But the server at your local restaurant apologizes even when he knows the customer is in the wrong, because the server has a lower status than his boss, who in turn has a lower status than the customers.

“Please” and “thank you” are both often referred to as “the magic words,” and there are lots of reasons why saying these things is so important. Both terms are polite ways of showing someone that you appreciate something they've done for you. 

If you'd like someone to hold the door open for you, saying “Hold the door!” sounds like a rough demand, while saying “Please hold the door” makes the same thing into a polite request! 

Saying “thank you” does the same thing. If someone helped you look for a lost button or bought you a present, saying “thank you” shows that person that you appreciate the time and thought they have given you in helping to look for the lost button or buying you a present!