Robby Witt knows about hope. In the last six years, he has gone through more highs and lows than most people experience in a lifetime. The 38-year-old former high school quarterback has faced olfactory neuroblastoma three times. This extremely rare cancer occurs on the roof of the nasal cavity and sometimes the cribriform plate, a bone between the eyes located deep in the skull that separates the nasal passage from the brain. It’s a type...