Children totally accept — and crave — family rules. “In our family we have a rule for X” is the only excuse a parent needs for setting a family policy. In fact， “I have a rule for X” is the only excuse you need for your own personal policies.
"To read is to travel without moving, to live a thousand lives in one."
A distributed system is one in which the failure of a computer you didn’t even know existed can render your own computer unusable.