Regarding Sickle Cell Anemia there was a repeat on 60 Minutes (US) this past Sunday where it was shown that the single gene that creates sickle cell anemia has been found for some time but more recently in several cases individuals have been able to be cured by putting the correct gene in an HIV virus envelope and injecting it into bone marrow. It is a complicated procedure but has worked. It is like watching what kind of work, persistence, and resistance to pain is required to bring forth a miracle.

This is a concrete example of change on the way. So it is possible.