excellent article, for myself I came to the conclusion that gold and digital gold (crypto-currencies, in particular bitcoin) have their advantages, as well as shortcomings, strengths and weaknesses.
Gold is more likely to protect your savings from falls in the market and many other troubles. At other times, the Crypto currency is able to increase your savings several times, give a good start, but at the same time, high volatility can cost you this money, and you can lose a lot.
each decides what to invest, but it is more expedient to always make diversification and spend your money wisely.
Thanks for the great article.