It was an epiphany for me watching a blacksmith at work. After the piece of metal is pulled from the furnace, it can be kept red hot if hit hard and often enou

It was an epiphany for me watching a blacksmith at work. After the piece of metal is pulled from the furnace, it can be kept red hot if hit hard and often enough. If I had bothered to think I would have known this theoretically = being a physics and mecheng guy.