There are broader lessons to be learned from what we’re seeing in the world of breast cancer.
Firstly, Americans are bad at statistics. When it comes to breast cancer, they massively overestimate the probability that early diagnosis and treatment will lead to a cure, while they also massively underestimate the probability that an undetected cancer will turn out to be harmless. They’re bad at pathology: they’re easily convinced that something called ductal carcinoma in situ (DCIS) is a form of cancer, for instance, partly because the cancer industry insists on referring to it as “Stage Zero” cancer. They’re bad at biology: they think that it’s physics, basically, and that cancers are discrete, localized growths which start small and get bigger, and that the earlier you find and treat them, in large part by physically cutting them out of the body, the more likely you are to be cured.