There are many quotes attributed to Mr. Sagan which are worthy. This isn't one of them, since it's based on a huge misconception of his, which you share."There are many hypotheses in science which are wrong. That's perfectly all right; they're the aperture to finding out what's right. Science is a self-correcting process. To be accepted, new ideas must survive the most rigorous standards of evidence and scrutiny." ~ Carl Sagan
The self-correcting (peer review) system has failed us. I have made many posts about this which you willfully ignore. One of them says,the self-regulating peer review system suffers from serious underlying defects.
Retractions from journals are not routine occurrences--journal editors are extremely reluctant to retract articles, a tacit acknowledgment of their own gate-keeping failure--and fear of reprisals from the sponsors of those retracted trial reports. Many journals dont even have retraction policies, and the ones that do publish critical notices of retraction long after the original paper appearedwithout providing explicit information as to why they are being retracted.
Judging by analyses showing that the number of retractions during the past ten years has skyrocketed, it is reasonable to conclude that the self-regulating peer review system suffers from serious underlying defects.
And this from:
Deception and Fraud in the Publication of Scientific Research: Are There Solutions?
found within the text:
... existing peer review systems probably cannot detect anything but the most obvious fraud.