Moodle

There is a saying that I know of along the lines that given enough time then a group monkeys could type out the complete works of Shakespeare. This then lead to a thought on if it actually happened then would it be a copyright infringement? Probably not given the time that has transpired, but then consider if instead of it being a random act, then what if the monkeys had just copied the text by learning how to use the keys Ctrl-C and Ctrl-V effectively? Then how could we tell the difference? With that thought in mind, then how can assessors of work on an online eLearning platform then detect plagiarism?