ancient homes had a central fire pit, or hearth fire in the middle of the dwelling. life revolved around the hearth, and it was indeed the most important part of the home. all year the hearth fire was kept burning and besides a door, small windows, and some torches, the hearth provided the only interior lighting. it was used to cook meals for the inhabitants. it was a central area where people congregated both for warmth and as a favored area of socialization. the fire would also be used for some level of craft making. i feel it is important to bring back that level of awareness and focus to modern living. the greater efficiency fits into our current obsession with sustainability.