There were so many questions after Shawn died. So many. Was there a family history of cancer? Did he exercise? What were the warning signs? Why didn’t you demand a colonoscopy earlier? Did he have a regular doctor? Did he smoke? Did the medical team try immunotherapy? Did he eat a special diet? Did he drink a lot? Did he have symptoms earlier in the year? Was he healthy otherwise? Those were just some of the things people asked me. Of course there were questions. Shawn was an incredibly vibrant 40-year-old. How could this happen, they wondered? But the big question was lurking under all of these questions, one that…