Idea’s Origin Doesn’t Legislate its Validity

There is an old saying that still waters run deep. That saying usually applies to people, but it is also true of principles. And there is no better example than the principle, “The origin of an idea does not legislate on its validity.”
This seems innocuous, obvious even. We all know that a genius can champion a stupid idea. Einstein added an extra term to his equations of general relativity to ensure they predicted a stationary universe, a decision he subsequently called his greatest blunder. And a dullard can advance a very good idea.