I thought several of these did show infrared heating? Or maybe I'm thinking of a different case than you. In any case a lack of heat is problematic. Even if th

I thought several of these did show infrared heating? Or maybe I'm thinking of a different case than you. In any case a lack of heat is problematic. Even if they're using some unknown means of propulsion, the second law of thermodynamics is absolutely settled bedrock science. They must dump waste heat somewhere.