I somewhat agree with this. Look at text messaging....no one "talks" to anyone anymore. I can imagine that people skills are a skill that needs practice, just like anything else. If it has been 6 months since you have had a phone conversation, have you lost some of the ability? Then again maybe it's like riding a bike and you never really forget how to interact face to face, ear to ear with a human. I can imagine though that the lack of human interaction can wear on a persons ability to hold a face to face conversation.