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| Personal background |
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| I am currently living in central Pennsylvania, but have travelled the world, and was born in Japan. I like to build PCs in my spare time. |
| Thoughts about SETI and SETI@home |
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I think life does exist outside of Earth, however, I feel that the chances of actually discovering them are miniscule. With transmissions constrained by the speed of light, and the apparent lack of suitable planets nearby, any transmissions we do receive will be tremendously ancient, and/or so far advanced that we would be unable to detect it, let alone decipher it. However, I feel that the mission of Seti@home is worthwhile, because you never know.
As for if we should transmit a beacon, we already are. Earth has been putting out electromagnetic noise for nearly a century. I doubt any life out there would be able to determine what they are though, except for EM noise. And with the relative slowness of transmissions, any message received and responded to would return to Earth in a far different time and society, so the response would have practically no meaning to the Earth that it returns to.
As for the benefits and dangers, I see tremendous danger and little benefit. A somewhat appropriate parallel is the European colonization of the New World. Any life that could respond or even eventually visit would be so far advanced that we would be insignificant. Did that Spanish or the English share their technological wonders with the natives of North and South America? No, the enlsaved them and killed them. Even the diseases that they carried devastated the New World. Thats what I would forsee if life ever responded or visited the Earth, but on a much larger scale.
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