Astonishingly, in spite of decades of research, there is no agreed theory of cancer, no explanation for why, inside almost all healthy cells, there lurks a highly efficient cancer subroutine that can be activated by a variety of agents - radiation, chemicals, inflammation and infection.
At one point I had a stretch where it was working on 'In Treatment,' then 'True Blood,' then 'Durham County,' then 'True Blood,' then 'In Treatment' again. If I didn't have that little dose of 'True Blood' in the middle, I might have lost my mind.