It means distinguishing intuitively between these particular large numbers and other large numbers. Once you get into the trillions, quadrillions, etc., it can

It means distinguishing intuitively between these particular large numbers and other large numbers. Once you get into the trillions, quadrillions, etc., it can be tricky to get a sense of the scale vs other large numbers that may sound similarly impressive but differ by orders of magnitude. These examples show that a quadrillion is smaller than I would have imagined without thinking about it, and I found they helped to get an intuitive sense of the scale.