I am sure you already have learned this, but since I am learning it, I will share it.

I have never won an argument by challenging the truthfulness of the other party. They either know they are lying and will not admit it because it does not pay or, more likely, they believe their truth. Either way, your accusation will not pay you unless the payout is coming from an independent and logical panel of judges — and it never is — and they won't likely if you are mean to the other party ….

So …

How do you win?

Forget about winning. It does not pay either.

What you need is to, first, find some common ground where you and the other person do agree. Then, agree that you may not agree on everything in the end but that it will neither end the conversation nor effect a potential relationship.

Then, gradually build as much agreement as you can. Where you cannot reach agreement, demonstrate the credibility and consistency of your argument by how you conduct it and by maintaining the process of developing it.

And gain respect by demonstrating that you, if only you, are willing to learn and to admit you are wrong when you are convinced that you are.

Be a partner in truth seeking and not an adversary. Seeking, ye shall find.