Evidence is anything offered to establish or refute a fact at issue: witness testimony, documents, records, physical objects, photographs, video, and electronically stored information.

Its use is governed by rules determining what may be admitted, how it must be authenticated, and for what purposes the factfinder may consider it.

Alternative Names:

Proof, Evidentiary Material

Why it Matters?

Cases are won on admissible evidence, not on facts a party believes to be true. Material that cannot be authenticated, that constitutes inadmissible hearsay, or that is excluded as unfairly prejudicial has no value at trial regardless of how compelling it is. That reality should shape discovery: the goal is not simply learning what happened but building a record that will survive evidentiary challenge.

Frequently Confused with

Frequently asked questions

Is all discoverable material admissible?

Is all discoverable material admissible?

No. Discovery is broader than admissibility. Information can be discoverable because it may lead to admissible evidence while itself being inadmissible at trial.

What are the main types of evidence?

What are the main types of evidence?

Testimonial, documentary, physical, and demonstrative, and each may be direct or circumstantial depending on whether it proves a fact without inference.