Ten-percent-of-the-brain myth

Summary

The ten-percent-of-the-brain myth or ninety-percent-of-the-brain myth states that humans generally use only one-tenth of their brains. It has been misattributed to many famous scientists and historical figures, notably Albert Einstein. By extrapolation, it is suggested that a person may 'harness' or 'unlock' this unused potential and increase their intelligence.