> there is a human at other other end who understands what "new comment" is and how it's different from "new private message" That's the great thing about medi

> there is a human at other other end who understands what "new comment" is and how it's different from "new private message" That's the great thing about media types and custom link relations, you can express the relationships and the formats in a way that a machine can understand, and add new functionality while needing less hardcoding. The thing this doesn't solve (in principle) is exposing new media types and relationships, that definitely requires updating on the client's end. But, it's a much better situation than "this url has a document with this format, I'll wget that url at the start of my program, parse this stuff out of it etc.."