Diversification is garbage : Jim Rogers

Jim Rogers, chairman of Rogers Holdings: Diversification is garbage -- it's something brokers invented to avoid getting sued. You only need four or five good ideas in your life to get really rich if you avoid mistakes. And the one way to avoid mistakes is to stick with what you know. Then, when you see a major development in your area of expertise, you'll know better than Wall Street when to buy or sell.

Source : The Washington Post