When the Supreme Court, or any other court for that matter, makes a ruling in a case they first look for precedent, in other words to see if there has been a court decision rendered on the same subject in the past and usually defer to the old decision in ruling on the case.
The greatest teacher in life is experience; it only takes one time of burning your fingers on a hot stove to know that you never want to touch another one.
The next greatest teacher is observation, paying attention to someone else’s experiences and profiting from their wins and losses, trials and errors.
In my generation I have seen the rise and fall off fascism, communism, different experiments in socialism and the kind of downright social and fiscal foolishness that leads to what has recently happened in Greece.
There is an old saying that those who do not learn from history are doomed to repeat it.