This weekend I was at a father/son camp with my 8-year-old. For one little bit we and a group of fathers/sons met with a blacksmith. He had two demonstration pits going with air hoses and rheostat controls handling the volume of air. Boy after boy asked their dads, "Why is that hose hooked up? Why is that machine hooked up?" I heard so many lame explanations that had nothing to do with oxygen and heat. I proudly, and sadly, told my son the ancient tale of heat and oxygen and promised to demonstrate when we got home and grilled/smoked the next time. I was proud, for sure, to tell my son the truth, but sad so many dads had no idea. And no, I share this not to promote myself at all but to lament the apparently dying art of mastering fire. Thanks to all persons for the help I receive here.