I came across this quote from Marcello Truzzi a couple of days ago during a discussion here of scientific skepticism vs. pseudoskepticism. It seems pertinant to the, ahem, disagreement between Judy Mikovits and John Coffin:
(emphasis mine)
All I'm asking is for true scientific skepticism, which allows the science to go forward and "build its cognitive map of reality." Saying that XMRV is over and it's time to move on doesn't do that, in my opinion. I don't think that the contamination theorists have met their burden of proof. Coffin did present a hypothetical answer to Nancy Klimas' question about how contamination could explain the differences between controls and subjects, but is there evidence? And he really didn't address the question of antigens/antibodies. At this point the contamination theories have raised important issues that must be addressed, but nothing is proven yet, on either side.
I think it is very premature to call a halt. And I think it's wrong to say that the Lipkin study will decide it one way or the other. The science on this is too new, there are too many variables and unknowns, to let any one study be make-it-or-break-it.