What is wrong with blockchain? Hi everyone. I am a professional software developer. Recent few years I work at a financial technology startup. And I have disappointed looking to current situation around blockchain. The blockchain is an amazing technology and a simple way to build great stuff like as an independent and full trusted election system. Just look at smart contracts. It really can change the world. Smart contracts can help to combine together smart devices and digital services as a new intelligent environment. It very similar to sci-fi books. But the society is interested mostly in cryptocurrencies. Everybody try to create new cryptocurrencies or to mine existing crypto-coins. A cryptocurrency has too many problems. The most important problem is performance. Most part of cryptocurrencies can generate about one or two blocks per half an hour. Real performance is depending on the number of transactions per block, but anyway it loses to swift and other traditional methods for a transaction processing. Attempts to improve performance decreases protection in common case. So I don't believe in future of cryptocurrencies in the current state. At the current time, it is just speculative instrument without any collateral. As result, we observe a lot of swindlers around it. They try to create a dirty ICO or sell false coins and etc. The society wants to earn free money, so spends too much effort on cryptocurrencies and so little on the perspective technology. It disappoints. I hope this situation will change. Thanks for reading. I hope you had fun.