After the PCAST report was published, there was a big outcry from the forensic science community. In response, the committee considered the objections and evidence of that community, and then issued this addendum.
Please read pages 1 - first page of page 4 (stopping after "There is no justification for accepting
that a method is valid and reliable in the absence of appropriate empirical evidence.") I have also posted a pdf version of the excerpt on our Moodle page under "Class 6.)
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