Originally Posted by Mihos
10000 years at light speed is a depressingly small distance. It is barely out of our own arm of our own galaxy.
If you think there is a faster than light communication, well, maybe they are using that. Why aren't we? Because we don't have it yet. Maybe they used radio for 250, 300 years until it was end of life, but that was 9750 years ago, so you just missed them. Maybe they are close and some vintage collector of radio on their planet just now is hearing our radio signals from 100 years ago, and they are one of the handful of stars inside of 100 light years away, and they have already responded and the signal we can listen too, but too bad it will take another 100 years to get here. I also doubt that any advanced civ would just be radiating radio all over the place like we do now, because it is horribly inefficient since anything that isn't straight point to point is just wasted energy. In fact, we radiate less and less into space now because of that very reason and are ourselves become harder to detect via radio.
The depressing thing is this. Faster than light communication is possible, or faster than light communication is impossible. (or secret bonus possibility that faster than light communication is possible, but only between the devices that establish it).
Most likely scenario for communication between us, is there is a tech we haven't invented yet, and when we do, we will find others are already there.
There is also temporal differences in that time is perceived and processed at different releative rates, 2 generations of us could have died in the time it takes them to form a sentence, or vice versa
And if there is some sentient speicies who is both advanced enough, and yet stupid enough to transmit a signal we can detect non stop from, say Andromeda, that's close right? Well they would have had to have started 2.5 million years ago for us to catch them today(actually, a little longer, because Andromeda was further away 2.5 million years ago) and in that, would have to be receive it in the past 100 years we would be listening... so yeah, we had a .004% chance of catching that message if we even knew what to listen for.
This all reads to me as excuses to explain their nonexistence (nonexistence from our perspective).
I mean, it seems like all scenarios depend on these super old civilizations to always from some reason or another to never really advance past what we can understand now and if they get past us they die. They always seem to be conveniently hindered.
It's as if their means of communication should stay within our skills to receive it. Let's say humans will live for at least 1000 years from now. Do you think our technology after 1000 years of advance would be something that requires some sort of a listening machine in the other end?
If we can imagine us making some science wonders in the next couple of thousands of years, why wouldn't the aliens have done it already? Oh, they just all got killed before they were able to do it.
So do I understand correctly that we haven't seen aliens because 1) they for some reason can't go far past beyond our means to travel and communicate so they just can't make themselves known to us or 2) the ones that could do it have all died for some reason before they were able to do it.
Aliens seem to conveniently have their technological advancements behind our advancements or just far enough to not still go past the barriers and obstacles our technology still have, or they have all conveniently died before no-one knew about them even though having possibly billions of years more time than us to evolve :D
I mean, If no alien civilization ever in these billions of years of time were never able to reach us here, why should we even entertain any kind of thought of us being ever able to contact any alien life either? If we could imagine us some day being able to do that, then it should be extremely likely that some other alien civilization should've been able to do that already.
Again, we are either alone here or the most advanced species in the whole universe. Simply too much time has passed for there to not be aliens who would be able to contact us regardless of what we think the obstacles for communication are. "Well, they could be dead by now" is just going through the hoops to avoid the reality that we are either alone or the most advanced species there is. Besides, even if they were
way more advanced but have for some reason died, it would mean we are probably the most advanced ones right now
because, lol, they are dead.
If we aren't
the most advanced species, there should be at least one civilization that has the skills and means and technology to reach us given the time passed since the universe began to exist. If we are
the most advanced species, then it's very understandable why we haven't seen aliens yet. And even better explanation for that would be that we are alone.
I just can't find any logical reason for one of those options to be correct.
Well, maybe some other civilization has began to form around the time we began to form and they have made their advancement around the same pace we have. Then they could be more advanced than us but still unable to find and reach and contact us. But I think that scenario also seems too conveniently hindered.
And of course there are the conspiracy explanations. That they have been visiting here for a long time but people in power don't let us know it. And of course the "humanity sucks so they don't want to let themselves be known" theories are a thing too. But those also go a bit too far to the deep end to even entertain their possibility compared to the two options that we either are the most advanced or we are alone.