In 1967, Keuffel & Esser, a maker of slide rules, commissioned a study of the future. The report predicted that, by the year 2067, Americans would live in domed cities and watch three-dimensional television. Unfortunately for the company, the report failed to predict that slide rules would be obsolete in under ten years, to be replaced by the pocket calculator. By 1976, Keuffel & Esser, who were now selling Texas Instruments calculators much faster than the slide rules that made up only 5% of their sales, mothballed its slide rule manufacturing equipment and sent it to the Smithsonian Institution.