I get asked that time to time. Same question for 20 years. Amazing. My mother in law asked me that. What do people think we do all day? 85 % of prostate cancers are CURED right now with operation or radiation. Same is true of many, many other cancers. I guess what people are really asking is "If a person has a tremendously neglected cancer that is widely spread upon presentation to the doctor, will we ever be able to cure that?" They mean to say "When will we cure ALL cancers no matter how advanced?" I guess thats what people mean, but it amazes me they still ask in all earnestness if we will be able to cure cancer *one day*.