person 1 to say or write it;
person 2 to understand it exactly as person 1 means it.
If person 2 does not umderstand exactly what person 1 means then there has been a failure of communication. It is the responsibility of person 1 to ensure that his message is properly understood by his audience.
I read this interesting snippet about DAC Cressida Dick*'s evidence at the Inquest in yesterday's Daily Mail:
She denied that she gave an order that Mr de Menezes must be stopped from getting on to a train at Stockwell 'at all costs' and also denied instructing the firearms teams to use lethal force to stop him.
Miss Dick told the inquest that she ordered armed officers to 'stop him' from getting on the Tube. She said: 'Stop is a phrase we all use all the time to detain, either to talk to someone or to arrest them. I was asking for what you might call a conventional - albeit aware of the risks - challenge from the firearms officers.'
Miss Dick described Mr de Menezes as 'the victim of some terrible and extraordinary circumstances' and said she did not think any officer did 'anything wrong or unreasonable'.
Well that's alright then. As Charlie Croker famously said to a subordinate in different circumstances: