What is meant by the principle: "communication is inevitable, irreversible and unrepeatable"? Explain what is meant by the principle: "communication...

Talking about
miscommunication or misunderstanding might be helpful here.

The idea behind
the quote, it seems to me, refers to an understanding of communication as a "transferrence
of information". This information does not have to be true or accurate, but can be purely
emotional, as many examples above have pointed out. 

But once the
transferrence of information has occured, we can only correct a misunderstanding. We cannot undo
it, just like we can't undo a thought.