Conclusion: Appraising Ignorance and Illusion

The title of this post is identical to the title of the final chapter of The Knowledge Illusion: Why We Never Think Alone (Unabridged), written by Steven Sloman and Phillip Fernbach. The authors note that this book has three central themes: ignorance, the community of knowledge, and the illusion of understanding.

The authors note that ignorance is inevitable simply because there’s too much complexity in the world for any individual to master. The Dunning-Kruger effect, which has been discussed in previous healthy memory posts, is that those who perform the worst overrate their own skills the most. This effect can be found by giving a group of people a task to do and then asking them how well they think they’ve done on the task. Poor performers overestimate how well they’ve done; strong performers often underestimate their performance. This effect has been found many times both in the psychological laboratory and in many real-world environments: among students, in offices, and among doctors. Dunning has collected an impressive amount of evidence that the reason it happens is that those who lack skills also lack the knowledge of what skills they’re missing. Consequently, they think they’re pretty good. However, those who are knowledgeable have a better sense of how matters should be handled and they know what skills they need to improve on. Dunning stresses the importance of this effect because all of us are unskilled in most domains of our lives.

The authors wrote, “As for the community of knowledge, intelligence resides in the community and not in any individual. So decision-making procedures that elicit the wisdom of the community are more likely to produce better outcomes than procedures that depend on the relative ignorance of lone individuals. A strong leader is one who knows how to inspire a community and take advantage of the knowledge within it, and can delegate responsibility to those with the most expertise.”

There are good and bad aspects of the illusion of understanding. We’re more likely to be accurate by avoiding illusion. We have a good idea of what we know and what we don’t know, and this should help us achieve our goals. We won’t take on projects that are beyond us, and we’ll be less likely to disappoint others, and we’ll be better positioned to deliver on our promises.

But they also note that illusion is a pleasure, as many of us spend a significant part of our lives living in illusions quite intentionally. We entertain ourselves with fictional worlds. Illusions can stimulate creative products by inspiring us to imagine alternative worlds, goals, and outcomes. And they can motivate us to attempt what we wouldn’t otherwise attempt.

Many posts have been devoted to this book because it addresses an important topic. It provides us with a more accurate picture of what we know and the consequences of shortfalls in knowledge. The title states “why we never think alone.” Perhaps it should read, “why we should never think alone.” Although he has certainly tried, HM has not done this volume justice, and he encourages you to read it for yourself.


© Douglas Griffith and, 2017. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Douglas Griffith and with appropriate and specific direction to the original content.


Tags: , , ,

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: