The man who lived a normal life until the age of 44 without 90% of his brain.

When he started experiencing weakness in his leg, he went to the hospital. That's when doctors told him he was missing most of his brain.

He was living a normal life with a family and a job. His IQ was tested at the time of his complaint. This came out to be 84, which is slightly below the normal range. So, this person is not bright — but perfectly, socially apt.