The Olden Days.
I recently re-established contact with an old high-school friend via email. I last saw him at his wedding thirty *gulp* years ago. (He has since divorced.)
It's tricky to fit now and then together. It's difficult to remember what I was like at 21...and what parts of that person are still with me. It's challenging to get old business out of the way and open onto new business. And of course all of this is possible because of...good old email. Bridging time and space.