As previously indicated, I have no interest in the matter, so will run no tests. It's the OP's interest in knowing about how an irrelevant factor affects life expectancy of black and white negatives that's being discussed, not mine.
If it's enough for the OP to "have fun," fine. That's why I previously posted "have at it." Just don't rely on his "results" as being in any way meaningful.
Certainly not, but such a lack of rigorous inquiry and reliance on anecdotes is what leads to absurd decisions in other areas of life. Citing but one current example, refusal to have children vaccinated, thereby causing public health crises.
The public lacks interest in or understanding of scientific method. Promoting, rather than denigrating, rigorous inquiry is what I'd expect and hope for from someone who claims to be a scientist. I guess not.