{"id":45682,"date":"2026-02-27T09:00:00","date_gmt":"2026-02-27T16:00:00","guid":{"rendered":"https:\/\/kk.org\/cooltools\/?p=45682"},"modified":"2026-02-25T14:44:21","modified_gmt":"2026-02-25T21:44:21","slug":"book-freak-198-how-we-know-what-isnt-so","status":"publish","type":"post","link":"https:\/\/kk.org\/cooltools\/book-freak-198-how-we-know-what-isnt-so\/","title":{"rendered":"Book Freak #198: How We Know What Isn’t So"},"content":{"rendered":"\n
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…<\/figcaption><\/figure>\n\n\n\n

Get How We Know What Isn’t So<\/a><\/p>\n\n\n\n

Cornell psychologist Thomas Gilovich examines the cognitive, social, and motivational processes that lead us to believe things that simply aren\u2019t true \u2014 revealing that our false beliefs aren\u2019t products of irrationality, but of flawed rationality applied to incomplete information.<\/p>\n\n\n\n

Core Principles<\/strong><\/h3>\n\n\n\n

We See Patterns in Randomness<\/strong><\/h4>\n\n\n\n

Our brains are pattern-recognition machines that often work too well. We see meaningful clusters in random data, believe in \u201chot hands\u201d in basketball when the streaks are statistically normal, and find significance in coincidences that are mathematically inevitable. The clustering illusion makes us trust our intuitions about randomness when we shouldn\u2019t.<\/p>\n\n\n\n

Confirmation Bias Shapes Everything<\/strong><\/h4>\n\n\n\n

When examining evidence, we see what we expect to see and conclude what we expect to conclude. Information consistent with our existing beliefs is accepted at face value; evidence that contradicts it is scrutinized and discounted. Worse: for conclusions we want to be true, we ask \u201cCan I believe this?\u201d \u2014 but for unwelcome conclusions, we ask \u201cMust I believe this?\u201d<\/p>\n\n\n\n

We Overestimate Agreement<\/strong><\/h4>\n\n\n\n

The false consensus effect leads us to overestimate how much others share our beliefs. Because we associate with like-minded people and disagreement often stays hidden, we don\u2019t subject our beliefs to healthy scrutiny. This social bubble reinforces false beliefs and makes them feel like common sense.<\/p>\n\n\n\n

We\u2019re Better at Generating Than Evaluating<\/strong><\/h4>\n\n\n\n

Humans are extraordinarily good at generating ideas, theories, and explanations that sound plausible. We are far less skilled at rigorously testing them. We prefer black-and-white thinking over shades of gray, and we\u2019ll always be tempted to hold oversimplified beliefs that feel satisfying even when reality is more complex.<\/p>\n\n\n\n

Try It Now<\/strong><\/h3>\n\n\n\n
  1. Identify a belief you hold strongly. Now ask yourself: \u201cWhat evidence would convince me this is wrong?\u201d If you can\u2019t name any, that\u2019s a warning sign.<\/li>
  2. Think of a recent \u201cstreak\u201d or \u201cpattern\u201d you noticed \u2014 in sports, luck, or daily life. Consider: Could this be random variation that I\u2019m interpreting as meaningful?<\/li>
  3. Notice the next time you encounter information that supports your existing view. Pause and apply the same critical scrutiny you\u2019d use for information that contradicts it.<\/li>
  4. Ask someone you trust but who thinks differently: \u201cWhat do you believe about X that I probably don\u2019t?\u201d Listen without defending.<\/li>
  5. Before sharing a surprising \u201cfact\u201d today, ask yourself: \u201cDid I verify this, or did I believe it because I wanted it to be true?\u201d<\/li><\/ol>\n\n\n\n

    Quote<\/strong><\/h3>\n\n\n\n

    \u201cFor desired conclusions, we ask ourselves, \u2018Can I believe this?\u2019, but for unpalatable conclusions we ask, \u2018Must I believe this?\u2019\u201d<\/p>\n\n\n\n

    \n\n\n\n

    Book Freak is published by Cool Tools Lab, a small company of three people. We also run\u00a0Recomendo<\/a>, the\u00a0Cool Tools website<\/a>, a\u00a0YouTube channel<\/a>\u00a0and\u00a0podcast<\/a>, and other newsletters, including\u00a0Recomendo Deals<\/a>,\u00a0Gar\u2019s Tips & Tools<\/a>,\u00a0Nomadico<\/a>,\u00a0What\u2019s in my NOW?<\/a>,\u00a0Tools for Possibilities<\/a>,\u00a0Books That Belong On Paper<\/a>, and\u00a0Book Freak<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

    The Fallibility of Human Reason in Everyday Life<\/p>\n","protected":false},"author":13684,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[76],"tags":[2397],"acf":[],"_links":{"self":[{"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/posts\/45682"}],"collection":[{"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/users\/13684"}],"replies":[{"embeddable":true,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/comments?post=45682"}],"version-history":[{"count":1,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/posts\/45682\/revisions"}],"predecessor-version":[{"id":45684,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/posts\/45682\/revisions\/45684"}],"wp:attachment":[{"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/media?parent=45682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/categories?post=45682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kk.org\/cooltools\/wp-json\/wp\/v2\/tags?post=45682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}