What Are The Top Five Facts Everyone Should Know About Oil Exploration?

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http://www.forbes.com/sites/quora/2013/04/03/what-are-the-top-five-facts-everyone-should-know-about-oil-exploration/

1) Oil is important. Shockingly, sometimes horrifically important.
2) It’s big. Capital B-I-G BIG. You have no idea how big oil is.
3) Oil is wealth. Not just wealth for producers, but wealth for everyone who uses it.
4) The oil industry is a really safe place to work.
5) Oil companies don’t really make that much money.