There are two sides to every coin

There are two sides to every coin. It means everything we did must have two opposite results or infections. Maybe someone who said this idiom wants us to know when you think you are unfortunate, think about what God have given you. If a boy was born in a poor family, he would know how to endure hardship, he would be a great man. If a girl was a blind, she would have a higher capacity of voice perception, she would be a musician. This will make us more optimistic to treat life.
However, how about we only have one chance? In a one chance experiment, the coin only has one result, head or tail. I know exactly there are two sides to every coin, but in fact, there is only one final. For example, you lost your arm, but you got 1 million dollar after that. If give you a chance to choose the arm and money, would you choose money? I think no.
So, don’t be so optimistic, be careful when you make every choice.