I read Greg's claim (and it's similar to mine) as meaning that there's no test to distinguish between fatal cancers and benign cancers, and this test doesn't cl

I read Greg's claim (and it's similar to mine) as meaning that there's no test to distinguish between fatal cancers and benign cancers, and this test doesn't claim to be such a test. Even if you have a test that's 100% accurate at detecting cancer, it's only useful if it only detects cancers that are likely to be fatal, otherwise unnecessary treatment will be expensive, both in dollars and in deaths.