What follows is an essay on how my thinking on bitcoin has changed since I began to write on the topic starting with my first post in October 2012. Since then I've written 109 posts on the Moneyness Blog that reference bitcoin, along with a few dozen articles at venues like CoinDesk, Breakermag, and elsewhere.An early bitcoin optimistI was excited by Bitcoin in the early days of my blog. The idea of a decentralized electronic payment system fascinated me. Here's an excerpt from my second post on...