David Eagleman reminds us of our limits:
Our brains have evolved to deal with issues at our own scales: mates, rivers, apples, rabbits, and so on. Our brains simply weren't built to understand the fabric of reality at the very small scales (quantum mechanics) or the very large (the cosmos). As Blaise Pascal put it, "Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed."
(Photo by Zach Klein)
The Dish 