- Listen to people that have expertise in the field they are discussing. Al Gore and Hollywood stars have no expertise in statistics or global climate change to make them worth a listen to.
- Neutrality - people that receive government grants are just as susceptible to bias as people that receive grants from companies - be wary of both.
- Affiliations - what organizations do these "experts" join or donate money to? What percentage of news reporters are donating to Democratic politicians? That is an affiliation that shows bias.
As the bumper stickers from the 60's used to say - "Question Authority"