If I were to use a veil of ignorance to consider whether a society with cancer or one with DGD is fairer, I believe that a world with DGD would outweigh the benefits compared to a world with cancer. With cancer, there is no pattern for who or when someone gets it, and it is a painful death. Even if one beats cancer, one can still run into the possibility of having cancer again. Since DGD was a reaction to a drug that cured most forms of cancer, it can be traced back to determine who has or will have DGD. On the other hand, because DGD is inherited, those individuals who have it can choose to have children to prevent passing it down to future generations.
If I were to not know who I would be in either society, I would prefer to be in the society that had the cure. While both diseases are horrible, at least with DGD you know in advance whether or not you have it. There is also the benefit that to some degree it can be controlled once you begin to drift away with the assistance of specific individuals who carry the scent. In a world without a cure, cancer is unpredictable and has no cure. It also can be a quick death or a long painful one. The biggest difference is uncertainty. Quarantine and sterilization are the main factors that influence my decision. Being to separate DGD people when they begin to drift not only protects everyone else but also provides a safe space for them, if in the retreat-like environment. This elongates their lives as well as protects them from self-harm. While I do not believe forced sterilization is ever okay, I do believe that the ability to prevent more people from having DGD can be done by not reproducing when one parent has DGD greatly influenced my decision.
If Lynn did not know any of the factors, I think she would have still wanted the Dilg center to be run by DGD people like her to exist. Regardless of what position she ends in life, it is better to have it than not have it. Dilg provides a place to help DGD sufferers control their disease, and these places also protect others from being hurt when they drift. Having DGD people run the facility is also a benefit not only for those being treated but also allows those who have DGD to help others like themselves. Dilg is far better than the other described facilities.
With the contractarian’s reasoning, Lynn could help herself reconcile herself to the future she sees herself, where she accepts the responsibility of being in an undesirable position in a desirable social institution. With the contractarian’s reasoning, having Dilg around and being run by DGD people is good not only for DGD sufferers because they are given a safe space to handle their disease by people who are understanding since they too will end up in their place eventually, but it also provides safety for those who do not have DGD because when a DGD starts to drift they self-mutilate but can also harm those around them. Regardless of what side you end up on, a world with Dilg that is run by DGD people is better than a world without one. Due to that reasoning, Lynn benefits from Dilg being available which is why she should do her part given the position she ends up in life.