To illustrate the vain conceit that the universe must be somehow pre-ordained for us, because we are so well-suited to live in it, he [Douglas Adams] mimed a wonderfully funny imitation of a puddle of water, fitting itself snugly into a depression in the ground, the depression uncannily being exactly the same shape as the puddle.
We remake the world through our technologies, and these in turn remake and extend us, in ever spiraling lattices of complexity. McLuhan uncannily foresaw the future, where electronic technology would shape and expand cultures and societies into a global membrane of communications.