Why was the wooden door invented?
The purpose of a door opening is: to allow people, animals and objects to pass for ventilation The purpose of a door closure is: preventing passage of infiltration air; reducing air drafts and creating an enclosed space that can be heated or cooled more effectively (revolving doors are especially efficient for this purpose) privacy, and noise reduction keeping occupants inside a vehicle regulation of access, especially when combined with various types of locks for aesthetics (e.g. cupboard doors cutting off view of the contents) to help prevent the spread of fire. The earliest records are those represented in the paintings of the Egyptian tombs, in which they are shown as single or double doors, each in a single piece of wood. In Egypt, where the climate is intensely dry, there would be no fear of their warping, but in other countries it would be necessary to frame them, which according to Vitruvius (iv. 6.) was done with stiles (sea/si) and rails (see: Frame and panel): the spaces enc