Most likely cause
Official material ties new buildings to research, while pre-release reports place research books in the expedition loop. The exact source and unlock order remain build-sensitive.
Primary lead: Official Steam description
Quick fix · Settlement work order
Symptom: The farming branch remains unavailable and waiting in the settlement does not produce research progress.

Legacy test path—reconfirm every label and control in the EA build.
The farming research node becomes selectable or its missing prerequisite changes. Do not treat finding a book alone as proof that farming is unlocked.
Why this answer is still partial
Official copy confirms research unlocks buildings and equipment.
Player/developer discussion provides a pre-release lead for research-book progression.
