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Does playing chess make you smarter? A look at the evidence
(theconversation.com)
General discussions about "science" itself
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^^ tl;dr: ^^ no
Yeah a lot of times "getting smarter" is simply about looking at things from a different perspective or thinking through issues logically.
While with regard to IQ I don't think it makes one smarter, it definitely exercises your mental faculties and in an aging population that would be extremely beneficial.