hyman rickover. great advice. the next chart gives a per spectacular thave hyman rickover talked about and -- perspective that hyman rickover talked about and this is the age of oil. it goes back to 1630, it could go back to the time of christ and the chart wouldn't change because the amount of energy we're using, the world is using, was so small that it wouldn't show above the baseline here. and then we entered the industrial age, the brown line there is when we started with steam engines and fueling them with wood and then we found coal and that's the black line there. and then we found gas and oil. wow. look what happened. when we found gas and oil. now, we're going to see this curve again and we're going to see it again and again. a very steep rise with this very long time in the abscess that have rise is very steep. we'll see in other charts where we have stretched out the time and the rise is not to steep. notice what happens at the very top up there. it fell off and then rose again. that's the recession of