Magic Light is the answer to Lost. Bet you didn't theorize that one.
What caused the smoke monster? Magic Light.
What caused the time travel? Magic Light.
What made Jacob special? Magic Light.
What made the Hurley Bird? Magic Light.
Explaination of the LightEdit
After the finale, Darlton was asked to explain the magic light a little bit for people who didn't get it the first time. "It's a light," said Darlton, "that's magical."