Battle of David and Goliath - Thruth or Myth?

The triumph of David over Goliath - any unlikely victory celebrated as a sign of God's strength... but did it really happen? Is it fact or legend? Was there a giant named Goliath and a real David? Did they in fact duel to the death? Could a shepherd's sling and small stone plucked from a brook kill such a mighty warrior? A surprised demonstration will amaze you!