Every morning in Africa, a gazelle wakes up. It knows it must outrun the fastest lion, or it will be killed. Every morning in Africa, a lion wakes up. It knows that it must run faster than the slowest gazelle, or it will starve. It doesn't matter whether you're a lion or a gazelle, when the sun comes up...you better be running.
I like geography best because mountains & rivers know the secret: Pay no attention to boundaries.