Page History

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1. Some continuity with past
   1. human-readable metadata returned
   2. and machine-readable metadata returned
   3. including persistence statements
   4. who/what/when/where paradigm (ERC)
   5. THUMP-like request protocol -- ?info(X,Y) vs ?info&arg1=X&arg2=Y
2. Never RDF
   1. unfortunately, JSON-LD is RDF; see tweet https://twitter.com/justin_littman/status/1206944465027584001
   2. however, widely used schema.org borrows elements names from JSON-LD and uses them in meta tags, which aren't at risk of RDF complexity

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