Belief is the most powerful drug known to man

Belief is the most powerful drug and our greatest superpower. Innovation, invention, social systems, and even language itself rest on shared and individual beliefs.

But is this a defining hallmark of humanity, or do elephants, dolphins, and other species believe as we do? Have we manifested Sapien Supremacy?

I would think so, due the generality of our intelligence, we have the perennial problem of balancing the unknown and the known. 

To face the unknown, you need belief.