As a person of science I felt the video left me wanting more interaction with the technology rather than just the person. As he was describing the cooker elements the videographer could have brought the camera to the item he was describing rather than just staying horizontally fixed where you couldn't see what he was talking about. But thank you for covering this important topic. I have several cookers and demonstrate them and low cost DIY ovens that people can build themselves at Earth and energy fairs. Bob