Repository of knowledge

Ancient's repository of knowledge, library that downloads the Ancient's entire knowledge bank into the brain of a person. That is, however, too much knowledge for a human brain to comprehend and the person exposed to this amount of data, is slowly degrading and dying.

At two occassions, Jack O'Neill was able to speak it, after getting huge amounts of information from the Ancient's repository of knowledge, but he never retained any knowledge, because both times the Asgard cleared his mind. (SG1: "The Fifth Race", "Fallen")