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by pavel_lishin
3986 days ago
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> It would be very hard to detect intelligence from our use of sonars. Why would it be hard to determine that we're intelligent? We've clearly created some sort of apparatus for generating sonar. I would imagine that someone listening in our oceans would be able to tell fairly quickly that we're a technical civilization. |
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Underwater sounds can come from a wide range of sources, including tectonics, natural events and animals. Those did not create some sort of apparatus. Yet, they can have a similar signature.
It is not even a hypothetical situation. A SETI lab spent a lot of time trying to figure out what a particular signature that their telescope picked up was, only to discover it was caused by their microwave oven: http://www.independent.co.uk/news/science/seti-the-hunt-for-....