MIT's Local Warming system warms you while you wander

The star of the show is a unwieldy infrared LED bulb mounted on a ceiling that’s flanked by mirrors meant to help focus all that heat in one direction. It’s connected to a series of motion sensors that can detect people milling around, and once they’ve been spotted, the bulb swings around to shoot heat right at them.

First fireplaces, then central heat, now this… I wonder if we are we losing anything along the road to progress? Is there an effective difference between living in a warm home and living in a cold home, yet one where you are always warm? A warm home sounds a lot cozier to me.