There is a wide spectrum of levels of consensus and belief, and of the conditions required to achieve them. For example, a situation may be:

• Assumed -- when it is "common knowledge," accepted on a default basis, and no evidence to the contrary has been presented or recognized
• Certain, True or Proven -- when evidence is conclusive or compelling
• Believed -- in Law, when there is a credible and reliable informant who is a witness
• Likely -- in Law, when the summary of evidence is in favor
• Probable -- when at least one item of direct, verifiable evidence exists
• Plausible -- when consensus-logic arguments "for" are stronger than those "against"
• Uncertain -- when evidence and arguments "for" and "against" seem equally plausible.
• Doubted -- in Law, if the existence of a competing or mutually- exclusive situation is suspected
• Unlikely -- in Law, when the summary of evidence disfavors it
• Improbable -- when direct or indirect, verifiable evidence is missing
• Implausible -- when arguments "against" are stronger than those "for," or where consensus logic cannot ascertain consistency or cause and effect)
• Suspected -- In Law, when not believed, but there is some suggested evidence or argument to support it.
• Possible -- where no necessary conditions "for" are violated
• Disbelieved -- in Law, when a credible and reliable informant is a witness to direct contrary evidence
• Impossible, False or Disproven -- when all necessary conditions for belief are violated or disallowed by conclusive evidence
• Not Suspected -- is not considered, or there exists some generally- accepted reason to deny it.