Zoom in and pan around. You'll notice it is not linear. Look at the slope of 1900 to 1950. Then look at the slope of 1970 to 2020. Are you telling me that's th

Zoom in and pan around. You'll notice it is not linear. Look at the slope of 1900 to 1950. Then look at the slope of 1970 to 2020. Are you telling me that's the same slope?