How do doctors/scientist come up with cures for cancer?

I'm not really sure how doctors or scientist or both don't have a cure for cancer yet. Why have they not paired up all the greatest scientest/doctors in the world and have them all work together to come up with a cure in a lab or something? They have so much money for funding I can't imagine how they... show more I'm not really sure how doctors or scientist or both don't have a cure for cancer yet. Why have they not paired up all the greatest scientest/doctors in the world and have them all work together to come up with a cure in a lab or something? They have so much money for funding I can't imagine how they couldn't afford to be able to test the things they need. How is it done so doctors from different hospitals just pop up with breakthrough one day or do they all just meet to brain storm. I know cancer is super complicated but it just wouldn't seem impossible to cut if doctors from around the world worked together to come up with a cure?
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