Ultimately, there is no way to be sure that the so-called right decision has been made before it has been made and acted on. All you can do is ensure that the process of decision-making is deliberately and painstakingly executed. That doesn't guarantee the best decision, but it sure makes it a lot more likely.
Conformity, whether rationalized or simply imposed, undermines our government, our press, and our educational systems. We've had to learn some hard lessons about this in the last 10 years. Surely one of them is that we must defend diversity as a tool for innovation and for responsible decision-making.