I think indisputable and what a scientific assertion is not clear. I would interpret an indisputable assertion as having probability 1 of accurately describing

I think indisputable and what a scientific assertion is not clear. I would interpret an indisputable assertion as having probability 1 of accurately describing a collection of observations. Falsifiability, http://en.wikipedia.org/wiki/Falsifiability http://en.wikipedia.org/wiki/Falsifiability, is used by many to define an assertion as scientific. From the article, "Sophisticated methodological falsification, on the other hand, is a prescription of a way in which scientists ought to behave as a matter of choice. The object of this is to arrive at an evolutionary process whereby theories become less bad". A scientific assertion will never have a probability of 1 of describing a set of observations since the supporting observations are of a finite accuracy. There are many scientific theories that have many supporting observations within a range of parameters, so have a high probability of describing those observations, but none describe the observations with probability 1. I worked as a theoretical physicist for about 10 years and never worked on anything where I did not make a set of approximations and assumptions that left me with doubts about the accuracy of any assertion I made.