December 20, 2012irt. [b]Annunaki50[/b]:
You know what, no, I'm involved in a shouting match already, so let me try and de-escalate from one here.
Ok, you believe that humanity's history was shaped by extraterrestrial interference. That is [i]fine[/i]. As hair guy says, it's possible.
Many other things are possible. It's possible that the Earth was made 7000 years ago by the Judeo-Christian God, and fossils and such were just put in to test our faith. It's possible we're all in a computer simulation that started five minutes ago and we only think we remember yesterday.
Strange as it is, science's claim is not to tell, with [i]absolute[/i] certainty, what happened, because we cannot know with absolute certainty, not when things are so remote, the evidence so slim and corroded by time.
What we do know, what seems to work, is not going for the far-fetched explanation before the data mandates it. There is no evidence yet found inconsistent with the idea that humanity lived and died alone on this rock called Earth.
To ask, what evidence would make me reconsider that, is a legitimate question. I cannot speak for everyone, because different people will have different thresholds.
Mine would be some kind of technological artefact, a length of carbon nanotube cord, say, that very clearly can be dated as ancient, and fairly clearly was intended for the purpose of going to space.
Because going to space is hard. If we postulate that it happened in the ancient world (not necessarily because of human agents) then we need to find some recognizable remnants of the logistics to get there. If that exists, the barrier to plausibility is diminished.
And one more thing, because honesty must be the game when searching for the truth.
It is entirely possible that, for example, the dinosaurs eventually produced an intelligent civilization. If that happened, it would be nigh certain there'd be no technological evidence of it left that could be recognized as such.
Absence of evidence does not mean it didn't happen. It does mean however that there's no reason to believe it. We can't know what happened. We can only guess at the simplest past that is consistent with present evidence. Smart money says that's the better bet.
The whole point of this is lost if you keep it a secret.