> Do you think people were terribly uncomfortable at ambient temperatures due to their physiology before AC was invented? Absolutely, unquestionably, YES! (Cer

> Do you think people were terribly uncomfortable at ambient temperatures due to their physiology before AC was invented? Absolutely, unquestionably, YES! (Certainly for some people). Those sufficiently uncomfortable would migrate to climates better suited to their physiology, if their physiology didn’t adapt to the environment; for example, my ancestors were from extreme cold environments, and I am without a doubt FAR more comfortable in 50 degree F weather in a T shirt than I am in 70 degree weather. And to me with the right clothing, everything down to and even below freezing is quite pleasant. Prior to much modern technology, just surviving and staying alive as a human was a miserable, painful experience. We have it so, so good today, compared to our ancestors just a hundred years ago, let alone thousands. Virtually every measure of human suffering (extreme poverty, starvation, sickness, death, etc) is dramatically lowering with each generation. It is a wonderful thing that modern advancements allows us to be comfortable, which then further frees our minds to pursue even greater and more wonderful endeavors.