Perhaps the way to see this is to ask not what's "easy to find" but what's "most likely to move the case on". If you are a journal editor and find in your hands

Perhaps the way to see this is to ask not what's "easy to find" but what's "most likely to move the case on". If you are a journal editor and find in your hands a note saying that paper X was fraudulent and has to be retracted, and another note that says paper Y had a mistake and has to be retracted, you would assign a higher priority to retracting paper X.