Re: Found the trick
No, you haven't.
Even if they were very biased in what they thought was 'left' or 'right', if they find that the material then shifts further in one direction than another, that observation still holds true even if starting from the 'wrong' point.
And I would love to know why you think they have 'obviously not managed to exclude their personal biases' based on what we all read in that article.