>Either they are an indicator or they aren't. Third option is that it is an indi... | Hacker News

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SkyBelow on March 9, 2020 | parent | context | favorite | on: Trading halted as U.S. stocks plummet

>Either they are an indicator or they aren't.

Third option is that it is an indicator as long as people aren't treating it as one, but once people react to it then it ceases having the power to indicate what is happening.

danans on March 9, 2020 [–]

For the curious, this is known as Goodhart's Law.

dpau on March 9, 2020 | [–]

also applies to psychohistory in asimov's foundation

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