Earlier quoted context omitted.
Better the opposite - date by default and on hover human readable. People would more likely want to copy the actual date than the human readable delta.
Agree to disagree :) The "human readable" is better at a glance, and timestamps are better when I care about the specifics. > People would more likely want to copy the actual date than the human readable delta. I agree that this is true when copying, but text is primarily for reading, not copying.
Anyway, in the context of a comment/activity thread, how long ago from today that an entry was tends to be less important than the age of the comment relative to the other comments.