Assertion: cry | /r/HasProperty | since least the 1880s
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text: Letting babies "cry it out" is an idea that has been around since at least the 1880s when the field of medicine was in a hullaballoo about germs and transmitting infection and so took to the notion that babies should rarely be touched (see Blum, 2002, for a great review of this time period and attitudes towards childrearing).