If you just make up numbers to create a hypothetical model to explain an observation that's fine. But then it's just a theory. Sebb suggested that lower life e

If you just make up numbers to create a hypothetical model to explain an observation that's fine. But then it's just a theory. Sebb suggested that lower life expectancy leads to less cancer. Dsjoerg defined a hypothetical model that would lead to that happening, and then said that proves Sebb was correct. That's just circular reasoning. And when the hypothetical doesn't match observed reality it's a sign it might be broken.