Mechanical wood pulping
TL;DR
Mechanical wood pulping - requires enrichment with adjacent possible narrative
Invented independently in the same year by Keller in Saxony and Fenerty in Nova Scotia. Fenerty's version was immediately adapted into newsprint.
What Had To Exist First
Preceding Inventions
What This Enabled
Inventions that became possible because of Mechanical wood pulping:
Independent Emergence
Evidence of inevitability—this invention emerged independently in multiple locations:
British America
Parallel development
Biological Patterns
Mechanisms that explain how this invention emerged and spread: