Economist Nouriel Roubini, known by the nickname “Dr. Doom”, has criticized the smart contracts on the Ethereum platform.

“Smart Contracts” are neither smart nor contracts: they are extremely buggy to 100 bugs per 1000 lines of code — & they are not contracts as no court can enforce them. The only courts in crypto land are the crypto developers’ kangaroo courts who randomly decide when to fork or not

— Nouriel Roubini (@Nouriel) on 1 June 2018.

“Smart contracts are neither clever nor contracts at all. They are prone to different bugs: 100 errors per 1000 lines of code. This is not a contract because no court in the world can not force the parties to fulfill the conditions. The only court in kryptomere are developers who randomly decide when to hardwork and when there is no” — said Roubini.

He also called for the introduction of a tax on carbon dioxide emissions in respect of all holders of bitcoin.

Indeed, the record including all environmental externalities probably the right fundamental value of Bitcoin is a negative number, of $ -100 dollars or so. Folks should be charged an hefty carbon levy/tax if they want to hold Bitcoin given how polluting it is. #CryptoCarbonTax!

— Nouriel Roubini (@Nouriel) on 2 June 2018.

“Given the catastrophic consequences for the environment, probably, the fundamental price of bitcoin is possible to Express a negative number, -$100 or something” — said the economist.

Earlier, Roubini has accused the representatives of the cryptocurrency community in a DoS attack on his consulting firm Roubini Global Economics in 2015 and told about the threats because of the criticism of bitcoin.