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depsidase Follow 24 Jan Seymour Cray The American engineer and supercomputer architect Seymour Cray is known to have been a hobby tunneller. (11 Cray built an 8 by 4 feet (2.4 by 1.2 m) cedar-floored tunnel under his house, (12 explaining that the digging helped him to think about computer designs. "While I’m digging in the tunnel, the elves will often come to me with solutions to my problem," he said. (13 randomencounters Follow 26 Jan Encounter: subterranean computer elves