He makes some untrue statements right from the start. For example, he seems to assume that all refrigerators need electricity, which is false. In the 30s, many people didn't have electric lines in their area, but they could buy kerosene refrigerators. They used the heat from burning kerosene to circulate the coolant instead of an electricity powered compressor. You can buy those refrigerators today. So at least one statement is false. I will listen to more of his stuff later.