Six blind men describe an elephant: "An elephant is like a rope" says the man holding the tail. "No, no," says the man holding a leg. "An elephant is like a tree." One man touches the trunk and says, "You're both wrong. An elephant is just like a hose."
And each stakes out a clear and confident position while understanding only a small part of the one big complicated elephant.
“The only way in which a human being can make some approach to knowing the whole of a subject, is by hearing what can be said about it by persons of every variety of opinion, and studying all modes in which it can be looked at by every character of mind. No wise man ever acquired his wisdom in any mode but this; nor is it in the nature of human intellect to become wise in any other manner.” ― John Stuart Mill, On Liberty