_{[Coop just kind of looks at him for a moment and then allows a small, fond smile. It's good to have him back, this man, despite his general contempt for most anything and everyone. In an odd way, it adds normalcy. And though it'll probably not be too long until Coop gets more regularly frustrated with him, that time is not this time.]}

There are a very large variety of them. It's common knowledge that they work, but I don't think anyone is too certain of how.

_{[So that'll be something for him to bite into, even with the stone-age technology.]}