Six gorilla-sized illusions that blind side good decision-making

by Holly Green

Here’s a short video clip, under two minutes. It is a fun test of what you see and don’t see when you’re focused.


What was your answer? Also, did you see a gorilla the first time around?

If you didn’t see the gorilla, you were like half the participants in a Harvard class taught by Christopher Chabris and Daniel Simmons.  In that class, the professors were surprised that despite their assurances that the gorilla did indeed make an appearance, those who didn’t see it remained confident in their belief that it didn’t exist.

Obviously, knowing the outcome guarantees you will spot the gorilla. You’ll be amazed that anyone could not see it – it’s that obvious.

I often use this clip with participants in keynote addresses and my experience is that less than 30% of the audience sees the person in the gorilla suit the first time – even lower than what the original professors experienced!

The two professors have now written a fascinating book called “The Invisible Gorilla: How Our Intuitions Deceive Us.”  It’s a great read that addresses several critical shortcomings inherent in our most important leadership tool – our brain.

Six Everyday Illusions

“The Invisible Gorilla” examines six everyday illusions that profoundly influence our lives: illusions of attention, memory, confidence, knowledge, cause, and potential. According to the authors, these illusions represent distorted beliefs we hold in our minds that are “not just wrong, but wrong in dangerous ways.”

The gorilla clip offers a great example of the first illusion (attention), which says that we think we pay attention to much more of the world around us than we actually do. The audience is so focused on a specific task (counting the number of bounced passes) that many people don’t spot the simian as it leisurely strolls through the video.

With a background in behavioral science, I’ve learned a lot about how the brain filters what we see, hear, and pay attention to. It’s the reaction afterwards that would be comical were it not so scary.

At first, people who didn’t see the gorilla insisted that no such animal appeared in the clip. No way could they have missed something like that! After watching it a second time, however, all were shocked and amazed at how obvious the gorilla appears. Some even accused the professors of showing a different video the second time around.

And that’s where three of the illusions come in:

  1. We think we see more than we actually do.
  2. We overrate our abilities to recall what we have seen.
  3. And we constantly overestimate our own qualities and abilities .

These illusions show up everywhere you look in the business world.

How else to explain a company like GM continuing to crank out monstrous gas guzzlers in a world of declining oil supplies and soaring prices? How else to explain Blockbuster continuing to invest in bricks-and-mortar video outlets even as their customers flocked to NetFlix and on-demand cable movies? How else to explain the popular music industry fighting digital downloading while watching an entire generation of their best consumers walk around listening to iPods?

These companies were run by very smart, capable people. But their brains caused them to see what they wanted to see. And they missed the 800-lb. gorillas walking right through their industries. Add to that their inflated confidence in their abilities to continue dominating their markets, and the end result was inevitable.

General Motors seems to have woken up and seen the gorilla (albeit with a lot of help from the federal government). The music industry continues to crank out CD’s, but they’re beginning to adjust to the new realities of popular music distribution channels. And Blockbuster is desperately trying to reinvent its business model while protected by bankruptcy, but they may have fallen too far behind to ever catch up.

As business leaders, it behooves us to get more in tune with how our brains really work. In particular, we need to become more aware of the many ways it causes us to distort reality and miss what’s really going on in the world around us. “The Invisible Gorilla” makes a great starting point for accomplishing this goal.

What “gorilla” have you missed in your business or industry that was blindingly obvious in hindsight? What are you so sure of that it is causing you to screen out contradictory data and remain committed to a plan that could be outdated?

Holly GreenHolly is CEO of The Human Factor, Inc., and helps business leaders and their companies achieve higher levels of performance and profitability.

Holly’s top selling book, More Than a Minute: How to Be an Effective Leader and Manager in Today’s Changing World (available in 9 languages globally) goes beyond the theory of leading and managing by providing practical, action-oriented information.

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