The Fidelity Problem makes me think of how much damage has been done to ecosystem growth by the likes of Peter Todd. I recall from last year that he said he is frequently telling companies who want to use Bitcoin just how low the transaction throughput is. He pours cold water on their plans to run various kinds of business flows through the blockchain because it is not ready. He does the opposite of what any normal software salesman does: which is to attract business and let the devs at home figure out ways to handle the extra volume later on.This is turing away business, no wonder companies are looking at their own private blockchains or other alts. They are being pushed away by small-blockers.Nice to see from Jeff's presentation that he is thinking about all the angles, and is very pragmatic. He doesn't let the perfect become an enemy of the good.