Search
Search the words. Explore the structure.
Search reaches the rendered text of papers, notes, methods and supporting pages. Explore remains the better entrance when you want to navigate by topic, object type, abstraction level or commitment state.
Two discovery modes
Retrieval and orientation are different jobs.
Search is lexical: find where something was actually discussed in the rendered corpus.
Explore is semantic: see meaningful directions, preserved options, evidence and methods without needing to know the site's vocabulary in advance.