Rick Rule says gold's drop below $4,000 rhymes with 1975, when the metal crashed 50% and then rose 8x, and the investors who panic-sold at the bottom missed the entire move. So is this gold selloff the buying opportunity of the decade, or a warning that more pain is coming? Legendary resource investor Rick Rule, founder of Rule Investment Media, joins Kitco News anchor Jeremy Szafron to break down the gold selloff after the price cracked $4,000 for the first time since November and Bank of A...