For years I’ve been a little obsessed with the mono nature of phone calls. Hearing someone talk in just one ear is a completely different experience than talking via speakerphone or through headphones. I’ve always felt that using a single ear means that the information is processed initially by that side, and this means that you’re either talking to someone’s creative or logical side. I guess you could say that the feeling you have that they are only half-listening to you is true.