Cryptocurrencies are, of course, intrinsically worthless. But just as some worthless things are more worthless than others, some cryptocurrencies (Bitcoin) are more worthless than others (Ether). Ether and the Ethereum network are undergoing changes that look set to reduce costs and increase efficiency, while at current prices the costs of verifying all current and future Bitcoin transactions exceed the potential value of mining all remaining Bitcoin (i.e., the reward for doing this verification), making the Bitcoin network vulnerable to collapse….