When you read and learn about cryptocurrencies (e.g. Bitcoin, Ripple, Ethereum), there are some commentators, politicians and others who characterize cryptocurrencies as a “Ponzi” scheme.  Some countries have banned cryptocurrencies.  The issue of cryptocurrencies, like many other issues, is nuanced, and not so dogmatic.  As I like to say, there are benefits and there are risks.  Let’s address a number of the risks and lay...