Because many people are afraid of making mistakes, they don't believe, say or do much. They behave like this just because they want to make no mistake. As I said, it's impossible, Being afraid of making mistakes is a mistake itself.Only through mistakes can there be discovery or progress. Making mistakes for pursuing truth is much better than doing nothing. Failure is the mother of success. Many scientists may make a great number of mistakes before they make any discovery. If we humans didn't make mistakes, we would make no progress and still live a primitive life.
Mistakes are the best teachers who guide us through difficulties. Don't let mistakes scare you. Let's learn from mistakes.