Because cancer is a morphing disease, the chemo chases it. Cancer knows this so it cloaks itself and morphs into something else, finally finding a way to break through the chemo. Much like a bacteria works its way around an antibiotic, eventually becoming resistant. It’s the law of diminishing returns. The hope is to kill it before it breaks through. You want to keep at it, not give the tumors a chance to breathe, but we seemed to always be one step behind.
