If some massive interstellar space opera Society existed in our galaxy would we of definitely observe them by now? Assuming there was no sort of attempted to hide nor contact backwards planets we would see saying stuff like old radio singles wouldn't we?
>would we of definitely observe them by now?
We could only answer this question accurately if we had experience with galactic societies.
You're asking a question we don't have enough real-world experience to answer.
>Assuming there was no sort of attempted to hide
Perfect example. Why would you assume this?
>see saying stuff like old radio singles wouldn't we?
Probably not. The inverse-square law makes it very unlikely we'll ever pick up stray radio broadcasts from other solar systems.
Yeah that, because if they were years ahead of us they probably would have developed TV one stage in the history if they eventually built starships wouldn't they? But the image of near by aliens watching 50 sitcom is unlikely then?
The film is not all that scientificaly accurate
WHY DO PEOPLE DO THIS
Well let's narrow down it a bit more.
How much of a 'radio footprint' does earth create through use of satellite communication. Assuming a technological society will create that much background noise in not much more, how visible does that become to Stellar neighbours?
Could earth detected from Alpha Centauri for example just from its background noise by the local equivalent of SETI?