Some people believe that life depends on either the concepts of certainty and doubt. With certainty comes a sense of confidence. When you are certain about everything in life, you will know with absolute truth your capabilities, responsibilities, and consequences for your actions. However doubt engraves a feeling of the unknown. If you are uncertain about life, then how will you ever be restrained by boundaries? Doubt may be the only certain undeniable truth. We cannot know with certainty what happened in the past, what is happening in the present, or what could happen in the future.
This is why doubt is prominent in life. For starters, doubt is the basis of all sciences. The proof for said theory is present in the concept of experimentation. If scientists were definite about their knowledge and their fields, then discoveries, inventions, or even technology would not have existed. If Dalton was certain that his model was the correct model for the atom then modifications would not have continued by various scientists until Ernest Rutherford constructed the final atomic model.
It is due to and based upon doubt that development occurs. If you do not doubt the things around you, then how would things ever change? Change occurs due to someone believing in something could be better, or has not reached its maximum potential. He starts to analyze it, experiment with it, think about it, and eventually cause change. Without doubt we will all be the same. There will be no room for creativity, intelligence, or innovation.
If people were certain that the only way for communication was in person, then no one would have ever thought of the idea of a telephone, cellular phone, or even e-mail. All the inventions and technology we have nowadays are based on doubt and all the future technology we are going to have is also based on doubt. One very obvious example of doubt would have to be faith. Faith is your belief that there is a God, a higher power, which controls everything in the universe. A power that is capable of every imaginable and unimaginable action.
However the concept of faith is not imprinted in all of us. Some of us have faith and others do not. Some have religions and others do not. If we all believed in one truth, whether it is the presence of a higher power or not, then we all would be the same. We all would be replicas of one another. But due to the fact that each of us thinks in a unique way has a different identity, and doubts, we have different religions, morals, and beliefs. Certainty is important. We have to be certain about specifics in life.
However these certainties are temporary. What we were certain about during our childhood years surely have altered, or at least have been modified throughout the years. On the other hand, doubt is eternal. We live to doubt, think, and cause change. This is the human purpose on earth. We were created different to think differently and act differently. We are born to evolve and evolve what is around us. This mission could only be attained by doubt and implementation of change, whereas certainty would cause stability but never advancement.