Sir John Templeton, legendary investor, was famous for saying, "The four most dangerous words in investing are, 'This time it's different.'" He knew that though history doesn't repeat, not exactly, history is an excellent guide for investors.In Markets Never Forget But People Do: How Your Memory...

An efficient market should not show any anomalies. When new information reaches a market which is efficient, it should automatically translate into prices of assets, which ought to eliminate the possibility of gaining an advantage over other investors, thus preventing excess profits. However,...