Using claims as a first-class citizen in your thinking helps you move towards strong beliefs.
If you don't explicitly state your claims you're never going to move in any direction. Everything will seem kind of relevant and worth pursuing.
Writing down claims can help manifest them. It helps to understand their implications, as well as supporting and opposing claims.
Claims eventually turn into beliefs and beliefs give perspective. They act like gravity. Strong beliefs are something that new information can be attached to.