Hypothetically, if one person is contacted/meets extraterrestrial life, they are said to be crazy or lying. Nobody believes them. Even though many people in the past claim to have met aliens, the majority of the world discounts their experiences.
So, the question is, how could the world be convinced of alien life in one event?
-
Apparently the former Canadian defense minister acknowledging major governments having contact and relations with aliens and covering it up for decades isn't enough.