Still contemplating a satsuma. It is hard now, like a walnut or a doorstop. I could hurt someone with it if I threw it. It is no longer edible, so technically it isn't food any longer. Fruit is supposed to be alluring and juicy. The plant strategy to continue the species. We're supposed to eat fruit. If you're worried about taking life, fruit likes it, it says, yeah, bite me. And scatter my seeds. Oddly comforting, if you think about it. Cows, apparently, have a different reaction if you bite them while they are just minding their own business out in the pasture.