But factor in how? (rhetorical question) Understanding bias well cannot simply reduce to a high-school debate style of tallying arguments for and against. First, there are more than two sides. Second, reasoning under uncertainty (with probabilities) is essential. Third, the best way for humans to reason requires getting the complexity out of your head. So one way or another, if you want to win [1], you have write down your model (we're not yet doing this here, but at least we're laying out some of the moving parts).
Anyhow, I'm not making a "final" assessment of overall bias; I'm trying to (a) expand discussion of the moving parts and (b) promote a rational and probabilistic approach here.