Because falsifiability is not part of how most science is done. Most scientists design experiments to verify hypotheses, not to falsify/refute them. The relati

Because falsifiability is not part of how most science is done. Most scientists design experiments to verify hypotheses, not to falsify/refute them. The relationship between Karl Popper's idealized scientific method, and science as it is actually practiced, is rather tenuous. Many people who study the scientific method reject Popper's views, although many of the commenters here seem to think that Popper had the final word on the subject. The reality is that science is done by people, and human culture and prejudice, including ego and groupthink, are common in science. This is why some scientists don't like to consider submissions of articles that fail to replicate previous experiments. It's a problem for peer review more broadly.