Managing that knowledge in our current society may be tough for many. I have a certain feeling the proof of extraterrestrial is already a fact. The next is how to and when to release the fact.
I guess given the spate of technology development and psychological make of mass behavior, science of successfully controlling Human behavior, NASA predicts it will be safe to release this information in 20 years. Therefore the talk of proving in 20 years that humans are not alone is just a make believe.
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