It's not surprising. We all have our biases. The other day I posted what I thought was a light-hearted comment about golf and cold weather... and poked a little fun at Al Gore... and got a sarcastic comment to the effect that I wasn't being serious enough about this very important issue (global warming). Obviously, I have my own bias with regard to that. So, I'll refer you to the second link above ("another example").I'll admit that one person's "obvious truth" is "bias" to another who doesn't agree. The "proof in the pudding" is the degree of certainty one can provide to back up one's position.
For example, there is no bias... no "consensus"... about the speed of light in a vacuum. There is only tested, verified, fact. On the other hand, there is no tested, verified fact about the political "consensus" surrounding global warming. There are opionions; there is "empirical information"; there is inconclusive interpretation of data; there are calls to action in the name of "risk management"... in other words, "we can't prove our contention, but we want to be safe rather than sorry."Then there is this and this. Go ahead, look at them.