Yes. I think it builds on what Dr. Weiner just said and also, since I'm quite familiar with Shannon Brownlee's writing and so on, this idea that you have to individualize or customize your approach to every patient and that individual approach involves understanding the aggressiveness or the growth rate of that cancer within the person and the vulnerabilities. There are -- so instead of just blanket-ly treating someone with chemotherapy in a empirical way where you certainly damage or hopefully destroy the cancer, but you do a lot of harm as well to the normal cells and to the patient.