Party Texting

Am just back from a fabulous night out at the work's Christmas party. It was a Chinese banquet with party games, karaoke and dancing. We rarely get to chat at work so before the music went up so loud we were able to talk and discover and share. It was illuminating. I don't sing but even I got up as a sort of backing singer for our group. There was much to be part of and to enjoy, even if one doesn't like all the music being played. So why does one of our number insist on chatting on Facebook instead of interacting with real life people in the here and now?