Not literally impossible, but, yes, Florida is miserable without air-conditioning. You can get by in the coastal areas if the building is designed to make the m

Not literally impossible, but, yes, Florida is miserable without air-conditioning. You can get by in the coastal areas if the building is designed to make the most of the sea breeze. But anywhere away from the coast is hot, humid, and bug-infested. You need the windows open to cool the building, but then the bugs come in. The population of the entire state was very low until after the invention of air-conditioning. The population roughly doubled between 1940 and 1960.