JoeTheJuggler
Penultimate Amazing
- Joined
- Jun 7, 2006
- Messages
- 27,766
Yes I have. If you like, read my comments on the other thread in the SETI section.Have you even considered this from the alien perspective?
Yes that's a point I've made a number of times. Even if something is technologically possible, there's no reason to assume it is economically feasible. (Check my link about about the argument based on Fermi's Paradox.) Even if it were technically possible and economically feasible there might be no social or political will to do anything like that.Even a directed signal would have to be enormously powerful. That costs money.
And the paranoids also sometimes say we shouldn't broadcast because it basically tells those evil overlord type of aliens where we live.
ETA: And while we're considering all the reasons an ETI wouldn't send a radio signal detectable by us: it might be that radio technology is a very primitive way of communicating. Already we are using it quite a bit less for stuff like TV.
I'm not sure what "retarded" means in this context. I guess you're using it to mean "not very smart".And what kind of retarded species would keep sending this signal for hundreds of thousands of years just hoping to get a return signal back?
At any rate, with a technology we don't know about, perhaps a beacon permanently pointed at a nearby solar system might be feasible. Probably not.
Also, there is, as Shadron pointed out, the non-zero chance that we'd spot the needle in a haystack by pointing Arecibo to the exact right spot in the sky at the exact right moment to capture a signal sent similar to the ones we've sent (sent out for a matter of minutes).
Also, as Shadron pointed out, the benefits of the SETI program spill over into other areas (learning how to do fairly sophisticated pattern detection in a distributed computer system, for one).
And the costs are very modest (and not publicly funded). SETI only gathers its data piggybacked on whatever else Arecibo is doing, so there's no opportunity cost wrt to that facility.
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