Writing is about hypnotizing yourself into believing in yourself, getting some work done, then unhypnotizing yourself and going over the material coldly. There will be many mistakes, many things to take out and others that need to be added. You just aren’t always going to make the right decision.

It’s natural to think these abstractions will save us time and improve our decision-making, but in many cases they don’t. Reading a summary might be faster than reading a full document, but it misses a lot of details— details that weren’t relevant to the person summarizing the information, but that might be relevant to you. You end up saving time at the cost of missing important information. Skimming inadvertently creates blind spots.

Information is food for the mind. What you put in today shapes your solutions tomorrow. And just as you are responsible for the food that goes into your mouth, you are responsible for the information that goes into your mind. You can't be healthy if you feed yourself junk food every day, and you can't make good decisions if you’re consuming low-quality information. Higher quality inputs lead to higher quality outputs.

Many of us have a hard time learning from our decisions. One reason is that our thinking and decision-making process is often invisible to us. We inadvertently conceal from ourselves the steps we took to reach our final decision. Once that decision gets made, we don’t stop to reflect, but just move forward. And when we look back at our decision later, our ego manipulates our memories. We confuse what we know now with what we knew at the time we made the decision. And we see the outcomes and read them back into our intentions: “Oh, I meant to do that.”

If you don’t check your thinking at the time you made the decision— what you knew, what you thought was important, and how you reasoned about it— you’ll never know whether you made a good decision or just got lucky. If you want to learn from decisions, you need to make the invisible thought process as visible and open to scrutiny as possible. The following safeguard can help:

Safeguard: Keep a record of your thoughts at the time you make the decision.

A third benefit to writing down your thoughts is that it allows other people to see your thinking, which is mostly invisible. And if they can see it, they can check it for errors and offer a different perspective that you might otherwise be blind to. If you can't simply explain your thinking to other people (or yourself), it’s a sign that you don’t fully understand things and need to dig deeper and gather more information.

A final benefit to writing down your thoughts is that it gives other people an opportunity to learn from your perspective. Many organizations would benefit from having a database that recorded how every person in the organization went about making decisions. Imagine the value of a searchable catalog of decisions in your organization. A system like this would allow people in different parts of the organization to check each other’s thinking.

Conclusion

The Value of Clear Thinking

Good judgment is expensive, but poor judgment will cost you a fortune.

The overarching message of this book is that there are invisible instincts that conspire against good judgement. Your defaults encourage you to react without reasoning— to live unconsciously rather than deliberately.

When you revert to defaults, you engage in a game you can't win. When you live a life run on autopilot, you get bad results. You make things worse. You say things that can't be unsaid and do things that can't be undone. You might accomplish your immediate goal, but you fail to realize that you’ve made it harder to achieve your ultimate goals. All of this happens without consciously being aware you are exercising judgment in the first place.