"If you're not for us, you're against us." How many people are backing candidates in 2016: https://www.statisticshowto.com/wp-content/uploads/2014/01/pie-chart-mislead... Lots of other examples at that site: https://www.statisticshowto.com/misleading-graphs/ This whole subreddit: https://www.reddit.com/r/badstats/ GDP calculations have to be careful about double counting. PCR tests for covid have a roughly 5% false positive rate and (after showing symptoms) a roughly 38% false negative rate https://www.sciencedaily.com/releases/2020/06/200610094112.htm https://www.health.harvard.edu/blog/which-test-is-best-for-covid-19-20200810...). On Fri, Sep 4, 2020 at 8:55 AM James Propp <jamespropp@gmail.com> wrote:
Does anyone know of any widely-promulgated bogus assertions of the form “The cardinality of set A plus the cardinality of set B equals the cardinality of set C” (where the C is something like the union of A and B) that sounds convincing until you step back and realize either (a) there are elements of C that are elements of neither A nor B, or (b) there are elements of C that are elements of both A and B?
Here I’m talking about flimflam at the interface between math and culture (not mistakes made by mathematicians in a mathematical context); e.g., fallacious stuff said by public figures.
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