according to anthropologist robin dunbar, the average brain can only handle about 150 relationships. although other organs can handle more. (laughter). (applause) dunbar studied the average size of tribes and villages throughout history and discovered that until recently most contained about 150 people who were easy to remember because you were related to them or married to them or both. (laughter) but there is now a way we can handle all the data that modern society crams into our sense holes and it brings us to tonight's word. (cheers and applause) head in the clouds. folks, to deal with information overload, the human brain uses something called transactive memory, relying on friends and family to remember things you don't have space for. like when a husband remembers to pay the electric bill while the wife remembers everything he's done wrong for the past 10 years. (laughter) now our brains are applying the same technique online. it seems that betsy sparrow, columbia researcher and decembererist song lyric, recently published a report called "memory in the age of google." subject