On the other hand, many people who reason from first principles fall into two fallacies: First, they believe that their system is how the world should work, an

On the other hand, many people who reason from first principles fall into two fallacies: First, they believe that their system is how the world should work, and therefore how it would work if only someone, somewhere, weren't interfering. The result is conspiracy theories. Second, they have not fully thought out the consequences, or don't care about them, and dismiss the historical consequences of similar systems in the past. Reasoning with people who ignore evidence in favor of their theorizing is difficult.