Dealing with ghosts

After several years of teaching in synchronous environments in which participants are geographically dispersed you get accustomed to the problems of bandwidth and connectivity that cause fade-out, freeze-up and sequencing problems. These like other digital phenomena are wonderful ways of reflecting on taken-for-granted encounters in face-to-face interaction. I don't think I'm the only one who actually experiences bandwidth and connectivity issues in offline communication! In last night's teaching session there were a couple of ghosts in the room. I heard their whispers, but were they really there? Or were they actually more there than I was (after all I wasn't there at all)? I wonder how much our years of familarity with so-called RL settings help us to smooth over all the false-starts, non-sequitors and random noise to present an illusory experience of a seamless and fairly predictable world?