Canals in History and Today

Powerful techniques exist to help the men who build canals; and these are not mere figments of peoples' imaginations, like the canals reportedly seen on Mars by Percival Lowell, no, these are canals like the Panama Canal, the Suez Canal, and the Croydon Canal -- some of civilization's greatest achievements, and not mere impossibilities. We are not talking, either, about gossamer flights of fancy like weight loss pills.