So I think real motivation tends to go back to what we would call peer motivation, self-superiority issues, recognition, acceptance, and in this case within the hacker community downright fame.
These guidelines allow scientific techniques to be used in evidence, as long as the techniques have survived the scrutiny of peer review, use established error rates, and have general acceptance in the scientific community.
It requires scientists to submit final peer-reviewed journal manuscripts that arise from NIH funds to the digital archive PubMed Central upon acceptance for publication.