Answer:
To support an argument by showing that because other courts have made similar decisions, the decision in the current case must be logical.
Step-by-step explanation:
When precedents are used in majority opinions and dissents, this is done in order to support an argument. The argument is that, because in similar cases, other courts have made similar decisions, then the decision in the current case must also be logical. This provides support to a particular decision, as well as regularity to the law.