Windows have been around for many years. Homes going back as far as 4000 years ago had spaces in the walls where occupants could see to the outside, as well as to get fresh air. If you doubt this, imagine the alternative, which is a stone structure with no ventilation. Occupants would also be vulnerable to attack, and perhaps even the theft of their belongings on the outside. However, at that time, people tended to wake with the sun. The agrarian economy left...
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