Whether we agree with the source's political views.

Whether there is corroborating evidence.

Whether the source is reliable.

Whether the source is in a position to know.

Whether the source is reliable.

Whether there is corroborating evidence.

Whether the source is respectful.

Whether the source is in a position of power.

Whether there is corroborating evidence.

Whether the source has a PhD.

Whether the source has strong views on the topic.

Whether the source is reliable.

Whether the source has a large following.

Whether anyone disagrees with the source (if any other source disagrees, then the source must be wrong)

Whether the source has strong views on the topic.