They simply do not share the truth of their experience with outsiders.
But none of the five are yet ready to discuss the past with outsiders.
That was something between his father and himself, not to be shared with outsiders.
Police business was not something to be discussed with outsiders.
Neither father and mother, nor sister, had ever been able to talk about it, either between themselves or with outsiders.
"We aren't allowed to speak of such things with outsiders."
We do not like to share unnecessary information with outsiders.
Certainly they did not seem to go to the stars to make contact with outsiders.
"Do you expect me to discuss my government's business with outsiders?"
In addition the men would be required to speak English when talking with outsiders.