The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.”
—Friedrich Nietzsche, philosopher (1844–1900)
We talk of thinking outside the box—we have think tanks, we deride group think, which is when the whole group agrees with no discussion and no dissenting opinion. I have led groups when I have started with “There is no such thing as a stupid question or irrelevant comment. Even these can be triggers for an innovative thought. Diversity of opinion is the essence of creativity.”