> "Our tests are bad, so lets[sic] not test" is not a thought worthy of respect. Correct. But that's not the issue here. Current tests can detect benign tumor

> "Our tests are bad, so lets[sic] not test" is not a thought worthy of respect. Correct. But that's not the issue here. Current tests can detect benign tumors, and do. People go in for their regular tests, hear "cancer" and of course want to get treatment. But that treatment itself is not idempotent. You want to accept the negative side-effects if the alternative is an aggressive cancer that will end your life soon. But you don't want that if there is no cancer. As in many fields, it's a matter of trade-offs and risk assessment. Here's one article detailing some of the issues surrounding overdiagnosis of colorectal cancer: https://www.gastrojournal.org/article/S0016-5085%2818%2934825-X/pdf https://www.gastrojournal.org/article/S0016-5085%2818%293482... (2018)