A biased expert is perhaps worse than an unbiased non-expert. The expert knows where the bodies are buried, so to speak. He can make all the arguments for one s

A biased expert is perhaps worse than an unbiased non-expert. The expert knows where the bodies are buried, so to speak. He can make all the arguments for one side and frame an issue to favor his desired outcome. Even if he's not doing so maliciously, bias can lead someone to convince himself that he is right/righteous.