An excerpt from Trend Commandments:

There are two kinds of risk: blind and calculated. The first one, blind risk, is always suspect. Blind risk is the calling card of laziness: the irrational hope, something for nothing, the cold twist of fate, winning the lottery, etc. Blind risk is the pointless gamble, the emotional decision, or the sucker play. The man who embraces blind risk never wins in the long run. However, calculated risk can build fortunes, nations, and empires. Calculated risk and bold vision go hand in hand. To see the possibilities, work things out logically, and to move forward in strength and confidence is how you win. Calculated risk lies at the heart of every great achievement and achiever since the dawn of time. Trend followers thrive on taking calculated risks. Like the original Karate Kid movie: Wax on, wax off. Risk on, risk off.