Is SETI Worth It?

njdube sent in this Space.com story about the money behind SETI that opens, "It's a risky long shot that burns up money and might never, ever pay off. So is searching for intelligent creatures on unseen worlds worth the candle? After all, aren't there better ways to use our monies and technical talents than trying to find something that's only posited to exist: sentient beings in the dark depths of space?"

Comments

The problem is that SETI is broken.

[An Ominous Cow Erred]

The truth of the matter is that we have no serious SETI effort.

All current SETI activity is built on the assumption that someone is trying to talk to us. Our detection capability is pretty much limited to an alien civilization already knowing we exist and directing extremely powerful, focused broadcasts directly at Earth.

Basically, given our current SETI programs, we couldn't detect Earth's civilization even if we were in the next star system over. We leak a lot of signals, but over vast interstellar distances these signals are weak, can be lost in background noise, and would require a huge antenna or array of antennas to receive. In other words, the we depend on aliens having their own SETI that is vastly more advanced than our own.

A real SETI project would cost many orders of magnitude more, and would require radio telescopes many orders of magnitude more sensitive than we have now. We're talking something on the level of making a crater miles across and making it into a radio dish. Arecibo is puny in comparison to what we need.

Blanketing an area the size of Rhode Island with a dish array might also work (though it would have to be very, very precisely controlled).

Any serious SETI effort that hopes to find someone that doesn't know we're here already and wants to talk to us will cost many many billions of dollars.

Compare the costs (and formatting!)

[Dukaso]

Let me put it like this:

SETI costs us, at most, $5,000,000 a year to fund.
The war against Boogiemen, in Iraq alone, is costing us ~$116,750,000,000 a year to fund.
SETI's lifetime cost thus far has been 115,000,000 (assuming 5million/year. 5mil is the most it costs per year, 4 million the least)

Mathtime! 115,000,000 / 116,750,000,000 = 0.000985010707

Yes, the lifetime cost of SETI has been but 0.000985010707% of the cost of ONE YEAR in Iraq.

.001% of the cost of one year of a bullshit war to fund a search for proof that we're not alone in the universe?
Hell yes.

Hell
Yes

Hell
Fucking
Yes

Sources:
http://www.space.com/searchforlife/seti_faq.html
http://www.nationalpriorities.org/Cost-of-War/Cost-of-War-3.html

Re:S.E.T.I

[ultranova]

And aliens would have the same psychology as we do?

Actually, in all likelyhood... yes.

Any advanced alien race must be a pack-forming species. The reason is simple: a race of loners would never manage to get culture going, since that requires communication between individuals. It would never reach the stars; in fact it would never even reach metal-working.

Living in a pack puts certain demands on psychology. Pack members can't just pursuse their own interests, but must take each other into account, if the pack is to function. In other words, pack-forming animals have an evolutive pressure towards morality. This pressure is made ever stronger the higher technology rises, because any misbehavior is likely to result in far direr consequences when the misbehaving person has access to bombs than if he only had access to stone clubs. That is the real reason why the current society is nicer than, say, the Roman Empire: we aren't nicer people, we simply don't have a choice.

People always go on about how aliens can be totally incomprehensible to us, but that is just plain untrue. They operate on the same reality, under the same laws of physics and logic, as we do. If they are succesfull enough to reach the stars, then their psychology must conform to those laws; and that makes it similar to ours. Self-preservation, reproduction, social interaction: those are the things any succesfull intelligent species must base their psyche on. There may be more, of course, but these are the absolute minimum concepts all alien minds must have.