But then I had a heart to heart with a friend in SL today, someone close to me who's work and life was directly impacted by the events on that day. As we talked, I felt my gut grow heavy with collective grief. There are some things you think you know, but it is only an intellectual understanding. And then someone says something to you that takes your 'knowing' to a completely different level. I could feel it in my bones, in my gut and in my heart.