Why Our Brains Do Not Intuitively Grasp Probabilities

Have you ever gone to the phone to call a friend only to have your friend ring you first? What are the odds of that? Not high, to be sure, but the sum of all probabilities equals one. Given enough opportunities, outlier anomalies--even seeming miracles--will occasionally happen.

Let us define a miracle as an event with million-to-one odds of occurring (intuitively, that seems rare enough to earn the moniker). Let us also assign a number of one bit ... Full Story »

Posted by Leo Romero
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Subjects: Sci/Tech, Health
Topics: Psychology
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Leo Romero
4.0
by Leo Romero - Oct. 1, 2008
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Fred Gatlin
4.5
by Fred Gatlin - Oct. 1, 2008

This is a good story that points out our inability to consider facts that are beyond our limited ability.

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Wayne Barker
3.2
by Wayne Barker - Oct. 1, 2008

Although likely accurate, this article is painfully short. It has few details and leaves the reader with little understanding of how to avoid "folk numeracy." Having a single sentence on the second page adds insult to injury.

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Norman Rogers
1.1
by Norman Rogers - Oct. 1, 2008

This article is mostly unintelligible. I suppose in the next installment he will tell us that we should believe scientists over our instincts. This led him to his belief in global warming in a May 2006 article in the Scientific American. He was terribly impressed by Al Gore who he considers to be a conduit for scientific information.

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Greg Kopczynski
2.3
by Greg Kopczynski - Oct. 1, 2008

This article was way too short, apparently targeted to the indiscriminate sound-bite reader. It does seem to provide sufficient data to explain why we *sometimes* (and perhaps even frequently) under/over-estimate probabilities, but the examples -- and the "dream" example in particular -- ignored "inconvenient" improbabilities related to some such cases, and were thus, unconvincing. I leave open the possibility that had the article been longer than six paragraphs, I might have been persuaded that nothing happens in this life more commonly than probabilities would explain. But it would take more than a couple of generic explanations of vague anecdotal examples to get me there. In short, this article bit off as a topic something ... More »

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