Uncertainty

     We can be pretty certain that the sun will rise in the east every morning (actually that the world will keep spinning.)  We know the laws of nature are not going to change.  We can be fairly certain that those we love will love us back.  Some say that death and taxes are very certain.   
     Uncertainty can mean that your mind is still open to consider a variety of thoughts or that a provable answer doesn't exist at this time and you have accepted the unknown.  Uncertainty may also propel you to do research to acquire new knowledge or correct previous knowledge. If something is still uncertain, you can make an educated guess.
     Uncertainty can also come after you begin questioning a long-held belief.  Perhaps in the past, you only considered beliefs taught to you by parents or religion and only listened to and read opinions that reinforced this first belief.  You may then begin to have second thoughts.
     Certainty can be comfortable especially when perks or rewards are involved.  You can have the feeling that you and your family have been right all along even for generations.  When your mind is made up, you no longer have to consider any alternative ideas.  In fact, people who don't agree  with you are considered wrong.
     Uncertainty is part of life.  We just may not have the necessary information to be certain of the past, the present, or the future.  We don't have all the answers; we can't have all the answers.  We can consider the probabilities and judge the odds.  We can be certain that our earth will continue it's path in the universe and that nature will take it's course.  Everything else has a certain amount of uncertainty.