Maybe "efficiency" is implied, since folks using the initial version of vi would...

		bmj on March 9, 2012 \| parent \| context \| favorite \| on: Here is why vim uses the hjkl keys as arrow keys Maybe "efficiency" is implied, since folks using the initial version of vi would be used to using those keys for navigation anyway. So, I read this more as "Bill Joy used a convention" rather than "Bill Joy chose the most efficient keys for touch typists."