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This reminds me that criminals prefer fiat money to digital money, when Pablo Escobar's time handled a lot of money and the way they counted millions of dollars was by weighing them, just like weighing 1Kg of beef , well, the dollars and that was the way for them to count quickly because it was a lot of money that counting it normally was something almost endless, it took a long time, and like that in physical form, well it was palpable, sure, maybe that's why the great crimes have been done with fiat money than digital money.
I have heard about stories of Pablo Escobar and how he used to deal with his money and how he used to burn dollars to get warmth and there are many stories along these lines, even now all the illegal deals are done with fiat currency, either in digital or otherwise but you cannot track them. Even criminals use any form of currency but the problem is all the transactions in Bitcoin can be tracked and hence doing any illegal activity is like having a money trail.