Many scientific studies have suggested that taking melatonin tablets can induce sleep. But this does not mean that me...

MichelleRod on August 15, 2018

Thanks for your question @smilde11

Answer choice E reads "If melatonin were helpful in treating insomnia, then every person with insomnia who took doses of melatonin would appear to be significantly effected by it."

The thing is, we don't know anything about how people with insomnia react to melatonin because we have no data about it. This principle does nothing to the argument because it cannot be applied.