As prices come down and the technology continues to improve, people simply buy the thing ---- which, it turns out, has fulfilled neither the utopian nor (i) ___ scenarios ascribed to it ---- and like a (ii)___ rainfall refilling a dry desert lakebed, over time it so thoroughly (iii) ____ everyday life that we no longer pause to think about its presence, or indeed what might have once lain beneath the shimmering surface.