Verifiability is a method of information quality control.
Whereas traditional encyclopedias are written by experts in the field, MEpedia can be edited by anyone. This means there is no way for readers to know who added any given piece of information or what that person's credentials are, and consequently readers cannot--and should not--assume that everything on MEpedia is objectively true. Instead, when MEpedia editors add information to the project (unless it is common knowledge), they should include a reference to their source for the information. This way readers, as well as other MEpedia editors, have the option of checking the information's source--verifying it--and making their own evaluation of its quality.