Maine What is Evidence: Inferences are a form of legal evidence used in the state of Maine to demonstrate that a certain fact is more likely to be true than not true. This type of evidence is particularly useful in civil cases, where the burden of proof is lower than in criminal cases. Maine What is Evidence: Inferences can take the form of circumstantial evidence, direct evidence, or a combination of both. Circumstantial evidence is based on reasoning and inferences, and can include things like witness testimony, physical evidence, and circumstantial facts. Direct evidence is based on direct observation and can include things like physical evidence, documents, and admissions from one of the parties in the case.