
The authors put together a test that involves counting the number of passes made by basketball players. Hard to believe, but in countless administrations of the test, there are always about 50% of the viewers who don't see that well.
The test is in the video below - it's worth taking.
The book goes on to demonstrate that we shouldn't particularly trust our memories, our eyewitness evidence, etc. How we can and do convince ourselves that we remember being present at events where it isn't the case. About "flashbulb" memories ("where were you when you heard John Kennedy was shot" for people of my generation), and how even these are often inaccurate.
It took the authors lots of pages to make just a few points. Important points, but ones that any reasonably observant person should have a pretty good handle on, at least if they've lived long enough.
Still, a quick read and worth the little time that it took.
Here's the video:
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