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Hi there. I admit that's not anything scientific. :-) I just entertained to give some interesting variants of these ideas. And I am not an expert in the questi

Hi there. I admit that's not anything scientific. :-) I just entertained to give some interesting variants of these ideas. And I am not an expert in the question of superluminal communication, be it on Birgit Dopfer's experiment or using ordinary subluminal speeds through wormholes. But to consider that the absence of alien artifacts or communication might require us to look for gaps in our knowledge w.r.t. physics is a fun one, you've to admit. :-)

lifeisstillgood 12y ago
If you are Anne, hi. Please don't take it too personally. What were you speculating on? It seems too trivial to say maybe aliens have some other means of communication. Are there parameters we can use to close down the problem? Grumpy, yes. Too quick to judge, yes, but still interested (although in UK timezone so tired)
- MrQuincle 12y ago
  Hi, lifeiststillgood. Yes I am Anne and I don't mind grumpy people so much. We all have our days! :-) If quantum entanglement is used - in the way we understand now - a subluminal/luminal carrier is required. Sending these signals is power intensive, so it is likely to be the case that modulating an existing source might be cheaper. Not so much a parameter that helps us much further though. Of course, it is important to take sparsity into account. It is very unlikely that a fixed signal originating from one point in the sky is the most efficient manner of communication. Sparsity is becoming quite an important concept in machine learning and I think SETI research might benefit from it. But, I've to say, I don't have experience with advances made in SETI research, so maybe they have advanced beyond the standard machine learning methods. :-) I'm just an ordinary roboticist.
  - MrQuincle 12y ago
    I found some articles in this direction: - http://arxiv.org/pdf/0810.3966 http://arxiv.org/pdf/0810.3966, Searching for Cost-Optimized Interstellar Beacons and Messaging with Cost-Optimized Interstellar Beacons, by James Benford (short pulses rather than a continuous signal). - http://escholarship.org/uc/item/4w59f2wk.pdf http://escholarship.org/uc/item/4w59f2wk.pdf, Design of interstellar digital communication links: Some insights from communication engineering, by David Messerschmitt (optimization as a coordination tool with aliens).

lifeisstillgood 12y ago

If you are Anne, hi. Please don't take it too personally. What were you speculating on? It seems too trivial to say maybe aliens have some other means of communication. Are there parameters we can use to close down the problem? Grumpy, yes. Too quick to judge, yes, but still interested (although in UK timezone so tired)

MrQuincle 12y ago
Hi, lifeiststillgood. Yes I am Anne and I don't mind grumpy people so much. We all have our days! :-) If quantum entanglement is used - in the way we understand now - a subluminal/luminal carrier is required. Sending these signals is power intensive, so it is likely to be the case that modulating an existing source might be cheaper. Not so much a parameter that helps us much further though. Of course, it is important to take sparsity into account. It is very unlikely that a fixed signal originating from one point in the sky is the most efficient manner of communication. Sparsity is becoming quite an important concept in machine learning and I think SETI research might benefit from it. But, I've to say, I don't have experience with advances made in SETI research, so maybe they have advanced beyond the standard machine learning methods. :-) I'm just an ordinary roboticist.
- MrQuincle 12y ago
  I found some articles in this direction: - http://arxiv.org/pdf/0810.3966 http://arxiv.org/pdf/0810.3966, Searching for Cost-Optimized Interstellar Beacons and Messaging with Cost-Optimized Interstellar Beacons, by James Benford (short pulses rather than a continuous signal). - http://escholarship.org/uc/item/4w59f2wk.pdf http://escholarship.org/uc/item/4w59f2wk.pdf, Design of interstellar digital communication links: Some insights from communication engineering, by David Messerschmitt (optimization as a coordination tool with aliens).