Good article, though writing the distances involved like this: "twenty-four hundred and eighty vertical feet" Makes it very hard to imagine. Partly because I

Good article, though writing the distances involved like this: "twenty-four hundred and eighty vertical feet" Makes it very hard to imagine. Partly because I would read 2480 as two thousand four hundred and eighty, and partly because they are changing between feet, yards and meters all over the place. The world will be a better place when the USA uses metric.