Judges are unable to place their personal judgment, or evaluate a court case based on their own beliefs. In order to prevent bias from affecting the case's outcome, judges follow a two step process when making a decision. Firstly, they examine the facts of the case in order to have the right information to compare it to the previous ruling in similar court cases, and research what judges said in the past. This process is known as locating the precedent. Secondly, by evaluating the constitutional basis of the previous rulings, they follow the doctrine of stare decisis, follow to the same argument of the previous court cases and "let the decision stand" by keeping the same ruling in earlier cases or overturn the previous ruling if it is deemed
