Let me break it down to you.

People make claims because they have an agenda.

When you lie to your friends to make yourself look cool.

When a male at a bar lies to a woman to impress her to get her into bed.

when your boss lies to you because he or she is lazy and does not know/care to know the answer.

when your parents lie to you because its easy.

when you lie to yourself because its hard to face the truth.

claims are made to support and promote ideas.

people don't reveal the truth outside of their claims because it makes no sense to do so.