Once upon a time, long ago, before all elected officials were knowledgeable, wise, and dedicated to serving the people who elected them, a majority of elected politicians decided to ease the lives of their children by simplifying the arithmetic that they were forced to learn. They legislated that from now on that pesky mysterious number known as pi would be equal to the nice round number 3. No more fractions! Especially no more fractions that were also irrational and transcendental and quite probably the work of the Devil.
The ignorant rejoiced and granted their legislators the power to enrich themselves. Homework became a dawdle. Everything went swimmingly until the older expert builders and engineers died off. The new builders started erecting beautiful circular towers, calculating tower dimensions with the new, politically correct whole number 3: the ‘PC Pi.’
The new buildings collapsed. The economy collapsed. The government shut down. Only the elected officials kept benefits, money, and a semblance of well-being. The people arose and voted them out of office.
But that was all long ago, before all elected officials became knowledgeable, wise, and dedicated to serving the people who elected them.