Beliefs represent assumptions and perceptions that we hold to be true. They are an essential mechanism through which we understand and make sense of the world around us. As such, beliefs have been adopted by humans since the genesis of the first human societies. We needed to understand the complexity of the unknown surrounding environment, so we created belief systems about why the sun rises and sets, why the rain falls down, and so on.
These beliefs guided our decision-making and the way we reacted to the world. As we evolved, we started organizing our knowledge in the form of scientifically testable explanations; nevertheless, the significance that beliefs hold for our survival remains unaltered.