Why Reading For the Sake of Learning is a Waste of Time?

People remember 10% of what they read, 70% of what they say and write, and 90% of what they do. So I will remember 70% of this article,(according to Will Thalheimer). After skimming a couple of articles of content strategy, and realizing that the information is the same as in my marketing studies(only differently named and provided in different format), I withdrew, and remembered, that this is not the best way to learn. I became aware of my procrastination to actually practice what I actually need to practice. 
The numbers may just be a rule of a thumb, but even from personal experience, I know, that they are definitely close to the actual target

Last year I read 25 books(some audio), this year I read 5 books. I am always taking notes, sometimes I reread some favorite, resonating books. Meanwhile, most of the information is currently not in my head, thought it has definitely shaped my thinking. I have worked in sales last year, and those nuggets and philosophies from sales books, that I applied in my work or in life, are actually still stuck in my head.

A while ago, I read a few books on comedy, joke-writing, when I was preparing for open-mic stand-up. The ideas and nuggets, that stayed in my head and shaped the way I think, were those, that I applied in my work(writing stories and non-nugget jokes). And they still affect my thinking.

The concepts, philosophies and practical knowledge that stayed in my head from studies, and shaped my thinking are those, that I prepared in a form of a presentation or some other practical assignment. I applied them in my work. Those ideas, that I share with other people, one-to-one or during a presentation — cling to my brain.

I read a few books on body language, charisma, psychology to improve my public speaking and leadership. The ideas and concepts, that stayed in my head, were those that I applied in my work(in public speaking events, seminars, contests, and even before some personal meetings(like job interviews).

So it boils down to this : quality = quantity. Attaining too much information can result in over burn, and as Elliot Hulse puts it „information constipation“.

Reading can be eye-opening, and sometimes it is for me. But in the ocean of information, nuggets are scattered. Conscious, selective and strategic reading, while asking questions, such as — what will I do with this information? — 
I believe is the key to mastery.
Nike says „Just Do it“.

I invite you to