Yeah - they must think there's this invisible cone of silence that descends on them when they whip out their cell. I've actually gotten used to seeing people "talking to themselves" - using hands-free earpieces as they carry on a one-sided conversation. In the old days we'd steer clear of the odd dears or give them a pitying look, depending on whether or not they seemed menacing. Now it's hard to tell the ones with voices in their heads from those with voices in their ears.
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