In the brief and troubled life of the Nintendo Wii U, one artifact endures not as a triumph but as a record: its GamePad controller, weighing 1.1 pounds, holds the Guinness World Record for the heaviest standard game console controller ever made. Launched in 2012 with the ambition of merging tablet and television into a single play experience, the GamePad carried the physical burden of its own innovation — a touchscreen, wireless circuitry, and a design that asked players to hold the future in their hands, whether or not their hands were ready. It stands now as a monument to the cost of ideas