What defines the term lived history

Yes he/she is correct

Living history is an educational medium used by living history museums, historic sites, heritage interpreters, schools and historical reenactment groups to educate the public or their own members in particular areas of history, such as clothing styles, pastimes and handicrafts, or to simply convey a sense of the Living history approach to gain authenticity is less about replaying a certain event according to a planned script as in other reenactment fields. It is more about an immersion of players in a certain era, to catch, in the sense of Walter Benjamin the 'spiritual message expressed in every monument's and every the site's own "trace" and "aura"', even in the Age of Mechanical Reproduction.[1]

An early example of the spiritual and futuristic side of living history can be found in Guido von List's book Der Wiederaufbau von Carnuntum (1900),[2] which suggested rebuilding the Roman Carnuntum military camp in Vienna's neighborhood as a sort of amusement park (compare Westworld). List, himself a right wing neopagan, asked his staff of landlords, waiters and rangers to be dressed in historical gear. He also asked to have any visitors redressed in costumes and described rituals to signify "in-game" and "out-game" status to enhance the immersion experience. E. g. the role of the garment is of interest till today.[2]