[onemoreact]

There are plenty of drugs that work for cancer type A, B, C etc. Unfortunately, there are billions of people in the world all randomly generating Cancer's so all possible mutations are going to show up eventually in somebody.

Which presents the problem, let's say the most common 50% of all cancers are easily cured by drug X. Well the other 50% are all less common and moving to 100% is only going to get harder as you progress.

[cgoddard]

But keep in mind each of those cancers is developing and evolving independently. Wiping out one type of cancer doesn't make it more likely for the other to proliferate on a population-wide scale. Sure, this treatment might not end up working for everyone, because some people's cancers might have developed chance resistance, but a whole bunch of people are going to be helped and cured without any ill evolutionary consequences.

[mikecane]

>>>Which presents the problem, let's say the most common 50% of all cancers are easily cured by drug X. Well the other 50% are all less common and moving to 100% is only going to get harder as you progress.

But for those who are in the 50% who can be cured in the first wave...

... and maybe one of them will go on to develop the cure that helps the remaining 50%.