Imagine this scenario:
Patient: "Doctor, you know those "Seven Warning Signs of Cancer"? I've got five of them."
Doctor: "OK, I'll order an extensive panel of tests... it's clear that something bad is going on. But I have to tell you up front: chemotherapy is off the table".
Patient: "What do you mean?"
Doctor: "No matter what we find, I'm not going to order chemo for you".
Patient: "What if you find tumors that are inoperable? Or surgery doesn't get the whole thing?"
Doctor: "It doesn't matter. I've seen how debilitating chemotherapy can be. I had one patient who had chemo a few years back, and it really just took the wind right out of him. As it turns out, he was misdiagnosed: he didn't even need any treatment at all. But the lesson I take from that is that chemotherapy just isn't worth it."
How much sense would that make?