Open floor plans are one small part of the problem. Older houses have separate rooms so people can have more psychological space, when they want it. Granted, t

Open floor plans are one small part of the problem. Older houses have separate rooms so people can have more psychological space, when they want it. Granted, that was for the comparatively rich. Poor people might all live in a one-room cottage with a dirt floor. In some places, many still do.