Have you ever heard the word “probability”? A simple example of probability is when we play with coins that have two sides. Try throwing the coin up and catch it again. Then, which side is facing us? How much probability do we have for each side to facing us?
The universe is very broad, calculating the distance of celestial objects must be something that seems impossible.
Imagine we are on a bus. The bus may not be fully loaded, with passengers and drivers and ourself, there are 24 people. It’s possible that bus passengers don’t know each other. We can assume that everyone’s birthday is scattered randomly throughout the year.