“How did we survive thousands of years without air conditioning, until for most people until less than a hundred years ago, and for many people until less than 50 years ago”
-Houses were built differently with higher ceilings and other tricks to keep heat rising and specific window alignments to allow ventilation throughout the house. But ya in general there were times that were hot. But probably not as hot as the houses we live in which are built in a way that relies on indoor climate control.