Even though I live in very warm/mild weather area, I ALWAYS try to keep a jacket handy if I know I will be going into an enclosed place to be sitting still, lik

Even though I live in very warm/mild weather area, I ALWAYS try to keep a jacket handy if I know I will be going into an enclosed place to be sitting still, like theaters, restaurant, etc. It's really silly that we have the technology of AC but cannot control the temperature accurately enough.