If you'd read the article, you'd understand that the author was discussing the diminishing returns of reading yet one more book over spending time absorbing and putting the lessons to real-world use.
They give the example of reading many books about exercise vs reading one book and doing the exercises it describes. The latter will end up fitter than the former.
I can give another example: take 2 novice chess players. Have one of them read 40 books in a year without playing chess. Have the other read 1 book, then spend the rest of the year playing chess. Who do you think will be a better chess player?
They give the example of reading many books about exercise vs reading one book and doing the exercises it describes. The latter will end up fitter than the former.
I can give another example: take 2 novice chess players. Have one of them read 40 books in a year without playing chess. Have the other read 1 book, then spend the rest of the year playing chess. Who do you think will be a better chess player?