The Ethics of Scientific Collaboration

In the wake of the Michael LaCour scandal, there's a renewed debate over the degree to which scientists who published a paper with a co-author, who turned out to be a fraudster, ought to be held responsible. If I agree to write a paper with you, based on your fake data, that I believe to be real, am I to blame for not detecting the fraud? I think peoples' attitudes here span a spectrum. At one end of the scale are those who say: only the actual culprit should be blamed for miscondu