Day-trading in the age of coronavirus

Amateur pseudoscience

Suppose, during a TV weather broadcast, that the reporter presented “forecasts” from several private persons, wholly unqualified in meteorology, who base their forecasts on eyeballing a handful of charts and graphs. Most of us would never rely on such clearly amateurish methods ourselves, and would reject outright any such forecasts presented by others. If anyone took such forecasts seriously, when a severe storm was approaching, rather than relying on the consensus of qualified government scientists assisted by state-of-the-art supercomputer models, they would risk disaster, including the potential loss of life.

Similarly, suppose that after an examination at

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