From Jakob Nielsen, usability guru. The user's experience should be similar to all other similar applications to minimize learning curve and maximize usability.
"I refer to the tools and techniques on this page as "notemaking" because "taking notes" is passive: just as we must make meaning, so we must make notes---in our head, on the page, and in our notebooks"
lecture notes for the course Programming Graphical User Interfaces (PGUI). The course belongs to the curriculum of the Department of Computer Science in the University of Tampere.