[softwaredoug]

The one I wrote about my field. I faced possible public humiliation for every mistake I made, so I busted my butt to learn all those gaps in my knowledge :)

[tikkun]

What’s the book and field?

[softwaredoug]

"Relevant Search" - in the field of search engines

TBH I can't say I've mastered the field. And have even given up on the idea of expertise. Things change too fast.

I think its more fun just to be an "enthusiast" which should imply a high degree of humility and understanding of the limits of one's own knowledge.