idk about science or geology,  but I know of lots of things that are "obvious" now adays. This video is about convincing people about some rocks. I work with animals, and i worked in animal racing. Its OBVIOUS to everyone that dog fighting is monstrous and abusive, but a few decades ago that was not so widely accepted. Today i spend time trying to tell people that racing animals is cruel. That the entire process and industry is cruel, its a tougher sell than fighting, but i know that when im dead and in a few decades that racing will be gone and people will look back at it as archaic and cruel. <br><br>I worked in dog sled racing but all the forms of animal racing have the same issues. in the us all forms of "animal fighting" were banned at once wit the animal welfare act, we need to do the same thing with "animal racing."   <br><br>According to this video it took many decades for people to see the truth about those rocks, its going to take decades to get rid of racing but luckily people have already been protesting it for decades so we are that much closer.