He claims that he experienced some of the events described first hand, and learned the rest from people closely involved.
Read more case studies that describe first hand how people tackle real-life challenges and opportunities.
The term is also not used to describe hand drawn assets or photographed assets (these assets not being computer rendered in the first place).
This story is described first hand at the beginning of the Kojiki, the first book written in Japan (712), and in the Nihon Shoki (720).