@scott

- context isnt just collections, it's basically a supertag that lets you group things that belong together, the other half of scoping (next to audience)
- tags are literally "related to" taxonomical references so this shouldn't be mismatched at all
- threads aren't necessarily trees with a top or root, they may be a chronologically sorted ordered set
- names have multiple interpretations and connotations, this is ideally why we use URIs not basic string terms. as2-vocab has definitions.