Revert "minor edits"

This reverts commit 7b8fa2109d0839bbab81311365bf0ace29db9d22.
Revert 7b8fa21..196a29e

This rolls back to commit 7b8fa2109d0839bbab81311365bf0ace29db9d22.
Revert "Progress on information markets section"

This reverts commit 4b4cb0559fce0de653a6299aa65828367c5d65e4.
first draft of intro