[BrandonMarc]

Put differently, 80% of his time gave his brain training and practice which likely improved the 20% that made it to market.

Also consider, frustrating though I'm sure that was, he probably still got paid for his effort in the 80%.

[edelans]

Interesting point of view, thanks for putting it that way ! It makes me think of artists :

- how many hours did a musician spent on his instrument before selling his first record ? - How many drawings/paintings before Picasso could sell something ? (etc.)