If information is online and currency is important, when was the information last updated?
Be aware that date information was created may be different from date it was put in a particular “container.”
Original information : Galen’s writings on medicine. Created circa 160 to 207 AD. Container 1 : Manuscript book written in 1150. Container 2 : Printed book published in 1821. Container 3 : Web page created in 2002.