Getting High on Cryptocurrencies There are now four times as many cryptocurrencies in circulation as fiat currencies.That's amazing. And encouraging.According to the Swiss Association for Standardization, which maintains the International Standards Organization database, there are 177 national currencies currently in use. That list generously includes four precious-metals and four bond-market units (codes XBA to XBD, for the curious).NUMBER OF DIGITAL CURRENCIES753The CoinMarketCap website lists 753 cryptocurrencies, all the way from Bitcoin and Ethereum down to StrongHands and Paccoin (current value:…