The question perhaps ought to be ‘Why is Evidence law?’, but for those of you who like to collect definitions, you might start with: ‘evidence law is the material offered in court during a trial for the purpose of enabling the finder of fact . . . to reach a decision on the issues in dispute.’1
"What is Evidence Law?,"
The National Legal Eagle:
2, Article 7.
Available at: http://epublications.bond.edu.au/nle/vol16/iss2/7