The article is fortunately published in open access, and so I can reprint it here (full article is below). What I think David and I convincingly demonstrated is that, according to the usual standards of medicine, acupuncture does not work.
Let me explain what I mean by that. Clinical research can never prove that an intervention has an effect size of zero. Rather, clinical research assumes the null hypothesis, that the treatment does not work, and the burden of proof lies with demonstrating adequate evidence to reject the null hypothesis. So, when being technical, researchers will conclude that a negative study “fails to reject the null hypothesis.”