False evidence

Visualization of narrower problems
False witness
Distortion of evidence
Misleading evidence
Uncorroborated evidence
Any witness, however irreproachable, may give unreliable evidence, and a jury may err by accepting unsupported evidence. Uncorroborated evidence is that which has been confirmed or supported by other evidence independent from the source of the first. Under some jurisdictions a charge may be considered proven in the light of evidence from a single witness, with the possible exception of witnesses who are accomplices of the accused or the complainant (such as in a trial for a sexual offence) where it may be assumed that the witness has a motive for lying.
(F) Fuzzy exceptional problems