Ch. 3 Enhancements

Things I left out that I think would be nice to haves:

How is this system censorship resistant?
-briefly answered in TX fee section of 3.2
How is this system reversion resistant?
-briefly answered in end of 3.1
How does it function in an asynchronous environment
-Not really answered: Need to demonstrate an example of someone missing a bunch of blocks (e.g. going offline for some time). Then, upon receiving a new block and not having it's parent block, request the parent from peers. Can easily verify the new blocks and get back up to speed.

Start by locating Chapter 3 and reviewing sections 3.1 and 3.2, where reversion resistance and transaction-fee censorship resistance are discussed. Add a concrete asynchronous example covering a participant missing blocks, requesting a missing parent from peers, verifying the received chain, and catching up; done means this case is clearly explained in the chapter.

Written by the indexing model from the issue text.