No. When a very ill patient with several terminal comorbidities dies, the null hypothesis is that he died from one of those conditions. Your prior is to be skep

No. When a very ill patient with several terminal comorbidities dies, the null hypothesis is that he died from one of those conditions. Your prior is to be skeptical of new medical interventions, and that's fine, but it is your responsibility to distinguish between your biases and the most likely a priori cause.