Самое смешное, что эту идею придумал и воплотил уже очень давно в тюрьме гитлеровский архитектор Альберт Шпеер. Из википедии:
With the draft memoir complete and clandestinely transmitted, Speer sought a new project. He found one while taking his daily exercise, walking in circles around the prison yard. Measuring the path's distance carefully, Speer set out to walk the distance from Berlin to Heidelberg. He then expanded his idea into a worldwide journey, visualizing the places he was "traveling" through while walking the path around the prison yard. Speer ordered guidebooks and other materials about the nations through which he imagined he was passing, so as to envisage as accurate a picture as possible. Meticulously calculating every meter traveled, and mapping distances to the real-world geography, he began in northern Germany, passed through Asia by a southern route before entering Siberia, then crossed the Bering Strait and continued southwards, finally ending his sentence 35 kilometers south of Guadalajara, Mexico.
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Из википедии:
With the draft memoir complete and clandestinely transmitted, Speer sought a new project. He found one while taking his daily exercise, walking in circles around the prison yard. Measuring the path's distance carefully, Speer set out to walk the distance from Berlin to Heidelberg. He then expanded his idea into a worldwide journey, visualizing the places he was "traveling" through while walking the path around the prison yard. Speer ordered guidebooks and other materials about the nations through which he imagined he was passing, so as to envisage as accurate a picture as possible. Meticulously calculating every meter traveled, and mapping distances to the real-world geography, he began in northern Germany, passed through Asia by a southern route before entering Siberia, then crossed the Bering Strait and continued southwards, finally ending his sentence 35 kilometers south of Guadalajara, Mexico.