This is a cow.

And this is the inside of a Cow.

Which contains a "rumen" which is used to "ruminate".

Which also means to think deeply about something.

To think about questions like: "Should I be eating Animals? Or whether or not installing windmills on your rooftop might be a realistic option. Because you can never be sure how the energy conversion is gonna be like from kinetic to mechanical energy. And then there's always the possibility that your house just might fly away one day. So, it's worth thinking about it for a bit. Hope that helps. YesRoots! (2019)