I don't get it either, personally, but I remember reading around high school (90s) a book called "Boost your Brainpower" or something like that. They mostly re

I don't get it either, personally, but I remember reading around high school (90s) a book called "Boost your Brainpower" or something like that. They mostly recommended lots of visualization (they said the trick is to say out loud what you are seeing to improve) but also had a suggestion to watch multiple televisions at the same time, suggesting it would be helpful in some way or another that I have long since forgotten. I never tried any of those, but hopefully in a decade we'll be reading about "the browser feature that boosts your brainpower" and not "the browser feature that made the amphetamine crisis even worse".