Awesome, by pointing out that the parent comment possibly intended to say "actual" instead of "technical," you've debunked his entire argument. Congratulations, you win the game.
How do you identify a definition as being "actual"? Why are the Myers-briggs authors the authority on introversion? Many people consider the MBTI to be bunk science, and the term "introvert" has been around for much longer than the MBTI.
EDIT: Also, why does there have to be just one definition anyway?
