Why communication is irreparable and unrepeatable?

communication is irreparable because the Words once spoken by your mouth can't be taken back. It is unrepeatable as a meaning conveyed by one person will differ from the meaning delivered by another person,whether they are delivering same idea. Communication becomes unrepeatable because one person's tone, body language or expressions are different from others.

Secondly communication is unrepeatable because we do not get a second chance to make first impression made by our Words on others.