if youre interested in another read on the economics of steem, more of a nuts and bolts kind of thing i have a couple posts that others have found interesting
https://steemit.com/economics/@chiefjay/where-does-the-money-come-from-part-2-of-my-steem-economic-model
https://steemit.com/interest/@sigmajin/understanding-the-steem-economic-system-vests-sbd-steem-dilution-interest-and-all-those-crazy-things