- hash with stages, progress for current step, collect statuses produce reason field
- show all that happened so far
- same format as gridx
- stepstatuses use list
- returning functions for the error return argument
- The Story of China
- The[[ mandate from heaven]]
- “The overthrow of the Shang was a turning point in Chinese history to which all later dynasties look back. The key to this was the Mandate of Heaven: the idea of the succession of dynasties, each which was believed to have received divinely ordained authority, which in due time was passed on. The cyclical pattern of the narrative of China’s history was set.” p.53
- [[song dynasty]]