>a blockchain isn't used to reach consensus on which intermediaries to use, it just acts as the settlement layer. To do the things the intermediary is not will

>a blockchain isn't used to reach consensus on which intermediaries to use, it just acts as the settlement layer. To do the things the intermediary is not willing to do. To use the Yahoo example, Yahoo is willing to generate a public feed of financial data, but it is not willing to sign a cryptocurrency transaction. We can leverage the credibility of its public feeds to create a financial application that is trustworthy as long as that feed is trustworthy. So to generalize my point: a blockchain application can be built around a trusted feed generated by a reputable party that would not be willing to agree to be a trustee of an application, or if they were willing, would not be as trustworthy in that role as they are in their role as the producer of the general-purpose feed.