Thus, the "memories" that people reported contained little information about the event they were trying to recall (the speaker's tone of voice) but were greatly influenced by the properties of the retrieval cue that we gave them (the positive or negative facial expression).
The externalization of memory [via the use of external symbolic storage systems] has altered the actual memory architecture within which humans think, which is changing the role of biological memory, the way in which the human brain deploys its resources, and the form of modern culture.