sentences:  The theory was that if Barney didn’t know he had cancer, the body might stop creating the cancer cells.The explanation Harriman gives comes from an old myth that, based on weight ratios to wing power and wind resistance, the bumblebees should be aerodynamically incapable of flight — yet the bumblebee doesn’t know that, so it flies anyway.Torn between his hope for a cure and his desire to continue his budding relationship with Cassie, Barney is forced to choose whether to go through the amnesia procedure again or remain with the memories and knowledge he has thus far acquired.