It’s widely assumed that there’s a trade-off between quantity and quality — if you want to do better work, you have to do less of it — but this turns out to be false. Quantity breeds quality. The act of creating something, no matter how lousy, is practice for creating a better one.
The 7 Essential Behaviours Of Highly Creative People
Louis Chew

Productivity is a key for modern “success”, but not a key for a quality. This is simply not true. You are using geniuses like Picasso as example to push an untrue statement. There are many different approaches, and there were many geniuses who produced very little number of masterpieces. However, if you are speaking about the modern monetary success, then you are totally right, and I’m glad you’ve used Thomas Edison as example, because he was stealing ideas from others very productively.

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