About: http://webisa.webdatacommons.org/42457233

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As I understand it, ???radical uncertainty??? is closely related to the idea of ???unknown unknown.??? An Unknown Unknown is an event that occurs but was totally outside of a person???s event space of possible outcomes.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com