Economist Paul Krugman says that the exploitation of Bitcoin uses a lot of electrical energy, but the largest codified currency is worth more than gold.
He said, "Gold is dead ... Bitcoin is more valuable than gold. It has more opportunities to increase value in the future.
When compared to Bitcoin's use of prepaid currencies, Krugman says the biggest problem is the transaction cost used to transfer BTCs from electronic wallets. He believed that if these costs were cut, it would probably wipe out his previous preconceptions about coding.