Growth
We like to think of things as linear.
When I was young my mother had told me that driving faster used more fuel. At the time I asked, if going faster used more fuel, but you also got where you were going faster, wouldn’t it even out? I remember the pride I felt when she didn’t know.
I of course, was wrong. She had grown up with the U.S. national 55 mile per hour speed limit so knew that driving faster was more expensive. footnotes, i cant drive 55, US limit