You could say, okay, a fossil that I found here is going to be newer than the stuff here, and it's gonna be older than the stuff here. This might be the newest of all. So you can look at relative dating, and if you're lucky enough to have some volcanic rock, you could do some of this potassium-argon dating. And there's many, many, many other techniques. And it isn't just about saying, oh, this skull was in this place in the world at this time. You can start to infer other things. You can look for fossils of the type of animals, the type of plants near these burial sites.