>>13269516>>13270719>>13272390>>13272413"A 2016 poll of 1,500 scientists conducted by Nature reported that 70% of them had failed to reproduce at least one other scientist's experiment (including 87% of chemists, 77% of biologists, 69% of physicists and engineers, 67% of medical researchers, 64% of earth and environmental scientists, and 62% of all others), while 50% had failed to reproduce one of their own experiments, and less than 20% had ever been contacted by another researcher unable to reproduce their work. Only a minority had ever attempted to publish a replication, and while 24% had been able to publish a successful replication, only 13% had published a failed replication, and several respondents that had published failed replications noted that editors and reviewers demanded that they play down comparisons with the original studies.[4][10] In 2009, 2% of scientists admitted to falsifying studies at least once and 14% admitted to personally knowing someone who did. Such misconduct was, according to one study, reported more frequently by medical researchers than by others.[11]"
https://en.m.wikipedia.org/wiki/Replication_crisis 
