
All the greats wrote prodigiously. Its importance only sunk in for me when i read the Notebooks of Leonardo Da Vinci. Text, Symbols, Diagrams etc. are all brought together to express Thoughts and Ideas all of which can be revised and extended as needed. It is in the Refining/Clarifying/Modifying/Compressing process where "real learning" happens. You just need Pen/Pencil/Paper and a quiet place.
I think a lot of people here are not getting the gist behind the use of pen and paper; so let me try to summarize it;
* They do not limit the concrete expression of any concept/thought that you might have. You can use text, symbols, invent new symbols, connect them in any fashion you choose etc. etc. They are free form and become an extension of your mind. See also the book; The Body Has a Mind of Its Own: How Body Maps in Your Brain Help You Do (Almost) Everything Better.
* They force you to slow down your thoughts i.e. still your chaotic mind and help focus on the problem and its various aspects. This is invaluable in today's world filled with distractions. The books by Cal Newport are applicable here.
* If you choose to make your notes public, it adds another layer of discipline to really understand the subject matter since you have to anticipate possible objections and have the answers ready.
* Finally, they help clear your mind of the inessentials allowing you to ruminate and manipulate the essentials more effectively. Yet ancillary data is always available as needed.
If you look at History, all the greats wrote prodigiously. I firmly believe that it was one of the defining factors which directly led to their eminence. I was first inspired by the Notebooks of Leonardo Da Vinci (get the 2-vol large prints by Dover) before i started noticing the pattern.
PS: I read somewhere that Dijkstra wrote one of the first Operating Systems; The "THE" Operating System by hand on paper!
The mark of a Genius is an insatiable curiosity about a wide variety of subjects and the willingness to jump into every one of them without regard to other people's expectations. Da vinci was unparalleled in that respect. The breadth of his interests is what makes him so great. Execution is always limited by circumstances like political climate, patrons, resources etc. Given the uncertain times that Da vinci lived through, it is an absolute miracle that he was able to do as much as he did. To dismiss it all by using platitudes like "Real artists/engineers" ship" is the height of ignorance and hubris.
Further reading:
* The Notebooks of Leonardo Da Vinci, Vols I & II (Dover publications)
* Leonardo on the Human Body (Dover publications)
* Leonardo, The Complete Paintings and Drawings by Frank Zollner (Taschen Publications). This is a huge book but worth every penny. I believe it was later republished in multiple volumes due to its size.
