You see, Franklin knew he was on his own, so he didn’t invest his money in things he didn’t understand. When Franklin arrived in Philadelphia, the city was ravaged by the South Sea Bubble. A group of speculators sold stock in a company and hyped it up. The stock prices went soaring until people came to their senses. Many folks lost piles of wealth and bankruptcies throughout the entire British Empire sky-rocketed. Franklin saw this in Philadelphia and he vowed never to simply trust the financial judgment of others.