This has always been clear as day to me, but I just couldn’t prove it. I used to take naps right after practicing guitar because I believed it would help me learn faster! LOL

> In perhaps the most striking example of learning during sleep, Konkoly, Paller, and several collaborators witnessed what amounted to conversations with people who were in the midst of dreams. Independent lab groups in the U.S., France, Germany, and the Netherlands asked lucid dreamers to answer yes-or-no questions and solve simple math problems. Electrodes measuring body and brain activity verified that the participants were not awake. Martin Dresler, a sleep researcher at the Donders Institute, who ran the Dutch experiments, said that they were able to verbally deliver new information to the sleeping mind—and to receive responses. Some people could remember the questions they had been asked when they woke up. “This is a form of very complex learning,” he told me.

https://xkcd.com/269/

Referenced Paper: https://doi.org/10.1093/nc/niaf067

Not about sleep learning but lucid dreaming in general: I have long been puzzled and disappointed that we are not pouring more research, interest, and funding into controlling the induction of lucid dreams. There are ways to learn to do it now, but they are slow and unreliable. Gadgets exist but they're fringe - there is no great lucid dreaming movement like there is with longevity, for example.

I would have thought in a society where we want a gadget or magic pill for anything and everything, our interest in this would be through the roof. You can live a whole other lifetime in a dream, either your own or of some other character or world you step into. You can replay the past see the future, countless times. Controlled lucid dreaming seems like the closest we will likely ever get to immortality. Why aren't we more bullish about facilitating it?

I rarely remember my dreams in the morning, only a handful times in my life. At one I was a Chinese citizen and experienced a dense feeling of being a little ant in the greatest Empire the universe and time had ever seen (China). A nothing in the whole. There are no words. Another one was an insane, out of the world sex experience. Dreams are wild.

I have been saying this for years.

When I was young I somehow figured out how to control my dreams. By the time I was an adult and working in software all my dreams were always iterating over solutions to problems I had at work. And every day I would come into the office with the ability to move forward on projects with insights in leaned that night while sleeping.

Omelette du fromage

My wife used to think that I had terrible sleep apnea because I'd repeatedly quit breathing for a minute or two at a time and then gasp for air, but it turned out I was just dreaming about freediving for lobsters.

Happens to me all the time, waking up with a solution (or a new problem :/) to complex software issues.

I thought this was already known! Why else would we be out of touch with reality for several hours per day?? Any non-trivial task that requires focus will improve via sleep: Speaking a new language, playing the guitar, pickleball, flying a helicopter, coding, etc.