Humour me for a second and think about this in a "sci-fi we have whatever theoretically possible technology we want" fashion. Suppose scanning technology progr

Humour me for a second and think about this in a "sci-fi we have whatever theoretically possible technology we want" fashion. Suppose scanning technology progresses to the point where we can quickly resolve every cell in the human body. Suppose computing technology progresses to the point where we can quickly interpret that scan data and identify which areas are normal and which areas are tumorous growths that shouldn't exist. Suppose surgical(/point application of energy) technology progresses to the point where we can destroy any individual cell without collateral damage. I believe at that point we could solve the entire set of conditions called cancer (but maybe not all disease, maybe some forms of dementia still evade us for instance). I'm not criticizing the current approach by calling it piecemeal. It's what we know how to do, doing it saves lives, of course we should do it. I'm just saying that cancer is a meaningfully label, and it's conceivable that at some point we can solve it, all of it.