Is publish or perish the cause of these errors? Where research is more focused on getting a paper out that validations and checks are ignored. Recent ongoing controversy on contamination of cell lines and how thousands of peer review papers continue to be published based on these cell-lines cast doubt on the effectiveness of peer review.
The sad part is that such cell-lines have been used to test cancer drugs only to fail at the clinical trials because they were being tested on the wrong cell-line.
Sadly, this continues to effect research outputs and progress.