The probative value must substantially outweigh unfair prejudice. The probative value must merely outweigh unfair prejudice. Typically, documentary evidence tends to have higher probative value than oral testimony. Probative evidence "seeks the truth". Nunn added that Milligan's conclusions were not supported "by reliable, probative, and substantial evidence". The Canadian judiciary system utilizes the term "probative", which also signifies "prove to be worthy". Some courts also use "probative similarity" to describe this standard. But it gets higher probative value when enhanced to a qualified electronic signature.