edison demerit. don't know why.and maybe by that time, which was late 1922, he was kind of finished with the issue. so does this have anything to say to us today? is a totally impractical and how did it go about doing this research? let me take the last one first. he was by that i am trained in a research method, which had rod tam access. and that was to study an issue as much as they could himself, but also turnovers the heavy work to research. and on this issue there wasn't an in-house research team. the battery shot, going to the machine shop, what were they going to tell them? so once he studied and studied and to protect themselves against looking like he was ignorant, you read the sources to justify henry hazlitt, a book about paper money and elation in france. he had lived through the greenback. in south after the civil war. he was now on the train, an up-and-coming businessman, investor and it into the crisis crisis of 1907. so a lot of this is personal knowledge to him. he didn't have to be told, watch out