In our world, our actions have an impact on others, so assuming that you understand something you don't becomes an ethical issue more than an intellectual one. There is a danger and maybe even a violence to the belief that you know something or someone completely, when you do not, and will not, and cannot. Knowledge does not allow you to understand the world. Knowledge dispels the illusion that you understand the world.
Nate Staniforth Here Is Real Magic: A Magician's Search for Wonder in the Modern World