I think that is due to the understanding of the meaning of the Word error, unmatched understanding and argued, and they both use the mood to talk. Don't mind cold. An important reason is that communication errors occurred.
I think that the loss of the meaning of the word error. Misleading mismatch And argued that And both the mood to talk calmly why it is not a communication error.
I think due to understand the meaning of the word error, understand do not match, and argued that. And both of them used in talking, calm, causes the communications error.