If there is a gold rush, it's far more prudent to sell shovels than dig for gold, no? :-) https://www.quora.com/What-are-some-examples-of-sell-shovels-in-a-gol

If there is a gold rush, it's far more prudent to sell shovels than dig for gold, no? :-) https://www.quora.com/What-are-some-examples-of-sell-shovels-in-a-gold-rush https://www.quora.com/What-are-some-examples-of-sell-shovels...