Pretend for a moment that one hundred people are standing in front of you. The only thing you know about them is that they all have lung cancer. One at a time, each person comes and stands beside you and shares some intimate detail about their lives. Sometimes you sense that you have much in common with the speaker, sometimes little. In each case you get an overwhelming sense of their humanity.

You are thinking about how you would like to get to know some of them better when I drop a bombshell: only eighteen of these people will be alive in five years.

It shocks you but I assure you I have not told you this merely for dramatic effect; statistically speaking, this is an actual scenario. The five year overall survival statistics for all stages of lung cancer cancer are only 18%. At stage IV, that number drops…