Today, we use json. How do we integrate it into our shell scripts? That's right, we simply make a tool (jq, miller) that takes stdin json, and _continue_ to use the agnostic, untyped tools alongside it, because they are just that, agnostic.

In 20 years when we use BGHY or whatever other format, we can use it alongside existing tools by simply... Making a tool that takes stdin in that format.