The crypto currency is one of the best inventions that have been created this time.
So I advise you to read what is the difference between the crypto and the ponzi scheme. What is the meaning of bitcoin, virtual currency. That's why you know the true answer exactly what the crypto is and what it can contribute to our daily life.
Agreed, recently we had some news coming in that, the some governments are seeking bailout from this giant Bitcoin which is the most credible platform of investment on a long term. Bitcoin has not been any kind close to a ponzi scheme as speculated in some quarters but a realistic investment that has potentials to grow any country that embrace it existence either now or in the nearest future.