In this business, if you're good, you're right six times out of ten. You're never going to be right nine times out of ten.
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.
The stock market is filled with individuals who know the price of everything, but the value of nothing.