Guns, Germs, and Steel

The recent oil spill in Santa Barbara, combined with the simultaneous consumption of Guns, Germs, and Steel got me thinking...

1.  Not again.  Exxon Valdez, Deepwater Horizon, and many, many, many more... we're basically going to keep having oil spills as part of killing ourselves into oblivion.
2.  From the book, I was somewhat shocked to learn that human-kind, as it has been existing for the last twenty thousand years or so, has been annihilating tasty animal species this entire time.
3.  So then if we've been killing off animal species this entire time, then what's the big deal if we keep extinctifying everything?
4.  Well, simply put, if we overfish all the oceans, and eat all the land animals, and eat all the edible plants, then we won't have anything to eat.  Except each other. #cannibalism

And then I was trying to figure out a graphical way of representing where we're going.  And here it is: