This just in:
A third of Americans believe in ghosts. A fifth of the population believes in the existence of spells and witchcraft, and almost half believes in ESP.
How about leprechauns? Or unicorns, perhaps? Do you believe in those, too?
We routinely split atoms, we've sent men to the moon, and we have increased the human lifespan almost threefold in just two centuries just through the power of reason and logic...and a huge chunk of the population still believes in invisible, unmeasurable, unprovable ghosts and spirits.