Part of the human condition is the fact that there are multiple influences in our minds that compete with each other, or work together, to form our decision making process. They are like two people inside our heads.
One of those is Reason. Reason uses facts, logic, words, experience and foresight. Reason can unemotionally take in all points-of-view, and weigh the pros and cons. Reason is the side of you that reads, does mathematical calculations, figures out the odds, and strategizes. When you’re faced with a new situation, it is Reason that examines the facts and figures in a rational way, without emotion or feelings, and comes up with a decision that is supported by reason and facts. It’s a very useful process that is vitally important to our lives.