Elon Musk recently appeared on the podcast of Indian entrepreneur Nikhil Kamath and said something quite interesting when discussing the topic of currency—energy is the only hard currency in the universe.

He went on to explain that in the future, humanity's material needs will be greatly satisfied, and by that time, the concept of currency may no longer be a necessity, or even the entire concept may disappear. Based on this logic, he believes that the underlying logic of Bitcoin is very solid—after all, mining essentially consumes energy, and this POW mechanism, to some extent, directly ties energy to value.

However, to put it another way, the leap from "currency will disappear" to "Bitcoin logic is hard" is quite significant. If currency really becomes unnecessary, what will be left of Bitcoin? Perhaps what Old Ma wants to express is that during the evolution of currency, those assets that can be linked to real energy consumption will have more confidence.