The approach and strategies are very similar in that you gather all the information you can and then keep adding to that base of information as things develop. You do whatever the probabilities indicated based on the knowledge that you have at that time, but you are always willing to modify your behaviour or your approach as you get new information. In bridge, you behave in a way that gets the best from your partner. And in business, you behave in the way that gets the best from your managers and your employees.
One observer commenting on security analysts over forty stated: "They know too many things that are no longer true." As long as I am "on stage", publishing a regular record and assuming responsibility for management of what amounts to virtually 100% of the net worth of many partners, I will never be able to put sustained effort into any non-BPL activity. If I am going to participate publicly. I can't help being competitive. I know I don't want to be totally occupied with out-pacing an investment rabbit all my life. The only way to slow down is to stop.
At this point, when treasury bills, seven day treasury bills at 1/20th of one percent, it's not because people want to earn 1/20th of one percent, it's because they trust the fact the treasury will give it back to them next week.
I would say that life at 84, I am having as much fun as I've ever had in my life. I mean I get to do what I love every day with the people I love-and it just doesn't get any better than that.
The key to investing is not assessing how much an industry is going to affect society, or how much it will grow, but rather determining the competitive advantage of any given company and, above all, the durability of that advantage.