The hosts of Re-Inventors, Jeremy MacPherson and Matt Hunter, put one of their "re-inventions" to the test against Olivier Jean, a speed skater and Olympic hopeful, at the Ricoh Coliseum this week. The propeller strapped to MacPherson's back was based on a patent registered in 1948 by Horace M. Morrill, who intended the device to "provide a portable manually supported propelling unit" for people on skates, boats or bicycles. The race, a promotional event......