It is impossible to make anything foolproof because fools are so ingenious. Whenever you set out to do something, something else must be done first. Every solution breeds new problems. Two wrongs are only the beginning. If at first you don't succeed, destroy all evidence that you tried.
Success always occurs in private, and failure in full view.
The question of the existence of extraterrestrial intelligence is often asked. My personal feelings are that the possibliity of life existing elsewhere in the universe is possible, and perhaps even likely. Whether or not there is any intelligent life in the universe is a much more difficult question in light of the way some things are going here on our home planet. My personal feelings are that mankind will likely never know with any certainty the answer to the question of extraterrestrial intelligence. I do, however, try not to deny the possibility of anything being a reality.