Confidence is easier to trust when it leaves room for correction.

Certainty that admits no error is brittle and hard to trust, because it tells you the person is not tracking reality closely. Confidence that includes a genuine account of what might be wrong is more credible, since it shows the thinking was done honestly. Leaving room for correction strengthens the claim rather than weakening it.

When you state a position, add what would change your mind and how sure you actually are. You will find people trust you more, not less. It also keeps you able to update without losing face.