All because it refers to revolutionary technologies.  Block chains are the technology underlying the Bitcoin crypto currency, which is characterized by high security, transparency and resistance to change.  At the same time, block circuits have much more potential than one that can be implemented in digital currency.  This technology makes transactions between two objects possible without an intermediary in the face of the clearing center, which significantly reduces the time and cost of the transaction.  Moreover, when combined with "smart" contracts, block-chain technology allows you to automatically issue digital securities and trade financial derivatives.  For example, the insurance industry has a great potential, which can offer new opportunities for the application of block-chain technology.