Without reading the paper this seems somewhat similar to my experience with modafinil. When fatigued or sleep deprived it can bring me back baseline but not much more.
Just skimmed the article but underlining only seemed to be one small part of the method.
Understanding by summarizing into Anki cards and then making sure you remember it trough spaced repetition (both "output") seemed to be the most important part.
Distributed learning, practice testing and Interleaved practice all seem to have some scientific backing.
This is quite childish advice. Is this your solution all disagreements?
"You will then have the freedom to do whatever you want each and every single day, and won't have to spend all that time and energy constantly convincing someone of things that are often for their own good."
I wish!
Constantly convincing someone of things that are often for their own good is basically the definition of what you do when working for yourself, or should I say when your working for you clients/trying to acquire new clients.
From the MIT challenge? I don't think that was the goal. If I remember correctly the blog, and his paid courses, are mostly about how to learn efficiently. So I'm guessing the purpose was part content marketing, part research and part general interest.
He's done something similar with language learning.
To add some anecdotal evidence... We basically get no sun for half of the year where I live. I find my subjective wellbeing has increased somewhat, especially during the winter months, since I started supplementing with 5000UI D3.
Other potential benefits are harder to measure, but the cost in terms of money and likelihood of adverse effects is so low I feel I might as well continue.
https://x.ai/news/grok-3#grok-agents-combining-reasoning-and...