What if we built skyscrapers upside down extending into the ground?

Would you live there? We need some SWeeps to volunteer for this social experiment.

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Reality is people need natural light. Lots of studies show its essential. For example, if a room's light is less than 60% natural it tends to diminish one's mood. This is why a lot office environments suck, and why we like to sit near a window whenever we can. Digging down ain't gonna help.