Is the absence of evidence also evidence of absence? Proponents of a biopsychosocial view of #MECFS often appeal to such a principle rather than present evidence for a psychopathology. -> Absence of evidence is not sufficient to prove a negative proposition. It depends on whether proper research has been carried out and whether the effect could be established with available tools. If not, to argue using absence of evidence is an argument of ignorance—a fallacy. ->

The controversy about #MECFS is just an echo of the general reproducibility crisis in medicine and psychology. journals.plos.org/plosmedicine/a… We cannot agree on the nature of an illness, if we don’t agree on how to make science.