From the other side, agreement is often not real. People agree out of politeness, or agree with a distorted (perhaps more salient but less relevant to the discussion) version of a claim, without ensuring it’s not a bucket error. There’s some use in keeping beliefs unchanged, but not in failing to understand the meaning of the claim under discussion (when it has one). So agreement (especially your own, as it’s easier to fix) should be treated with scepticism.
From the other side, agreement is often not real. People agree out of politeness, or agree with a distorted (perhaps more salient but less relevant to the discussion) version of a claim, without ensuring it’s not a bucket error. There’s some use in keeping beliefs unchanged, but not in failing to understand the meaning of the claim under discussion (when it has one). So agreement (especially your own, as it’s easier to fix) should be treated with scepticism.