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The WOW signal in my openion, was just a possible random ETI signal, not sent on Earth's direction but picked up ramdomely by an Earth telescope. It is possible to pick up ETI signals by chance, like an alien radio telescope picked up the signals from either Voyagers probes by chance; a one time event. The location of alien radio telescope and Voyagers just happen to cross eachother, a random event. For a powerful alien radio telescope, Earth's radio signature must be easily picked up, it would be the only planet in the solar system with an artificial radio signature, for that matter, even artificial radio signatures would be possible around the Sun because probes sent to explore our home star. | 
