view from above paved road with curves that skirts the coast in gentle slope sea with few waves, showing some rocks and vegetation and a car...

To go around the coast, there is usually a road for cars. We can use a car to measure the coast. We can go around the coast with a bicycle or walking and, more precisely, we can make certain contours that the car cannot. If the contour were made with the precision of an ant walking, the coast would be larger than the car traveling on the road. This reasoning comes from fractal geometry, proposed by Mandelbrot.