I feel headlines like this can be answered using simple logic. Most people want to learn many things, but are lazy. Learning while you sleep would solve this. I

I feel headlines like this can be answered using simple logic. Most people want to learn many things, but are lazy. Learning while you sleep would solve this. It would be an absolutely enormous industry. Want to know French, but too lazy ("busy") to learn it? Listen to this magical audio file before/during sleep and in just x weeks you can amaze your friends and neighbors with your positively paralyzing parlezing without any of the work! Order now, just $xxx! So the answer is going to range between a plain "no" and a "kind of sort of in a way that can, at best, work as an extremely modest supplement to conscious learning, under best conditions." And you need not worry about missing out on some cutting edge breakthrough. If and when such things happens this would be really really big news - not something restricted to a random classically clickbaited headline with the actual article hidden behind a paywall. I just mention this because I think our inclination is to let our curiosity get the best of us, and of course - what if there's something we've missed out on? But in the process of this, we greatly incentivize this form of faux journalism. And the nice thing is is that the above logic can be applied to absolutely huge swaths of the entire media.