On Wed, Feb 7, 2018 at 7:38 AM, Telmo Menezes <te...@telmomenezes.com> wrote:
> > To summarize the argument: > > 1. A sufficiently advanced civilization is bound to become a galactic > civilization; > 2. We do not observe a galactic civilization; > 3. If other instances of life are found, this means that life is not so > rare; > 4. So it is likely that there is a major obstacle that prevents a > > civilization from becoming galactic, > I think that's a pretty good summary. > > > and this filter is likely to be > > ahead of us. I wouldn't say its likely I'd say it's unknown if the filter is ahead of us or if we already passed it and we're the first to make it this far. > > > It's an interesting argument but I think it is based on some rather > strong assumptions: > > (a) That becoming a galactic civilization is possible; > Right, and it may not be possible, technological civilizations may always get destroyed or start to become moribund whenever they get much beyond the point we're at now. > > > b) That becoming a galactic civilization is desirable; > Right, ET might prefer to become a navel gazer and spend eternity in the electronic equivalent of a crack house, but even if 99% chose that path if just one individual in one civilization choose to make one Von Neumann Probe then we'd see evidence of that fact. But we see nothing. > > > (c) That galactic civilizations are observable by us. > If its not observable to a blind man in a fog bank then it doesn't deserve to be called a galactic civilization. > > > Firstly we don't know if there's an upper limit for technological > > progress, or where that limit could be. We know some things, we know that if the laws of physics work the way we think they do then perpetual motion machines and time machines and faster than light spaceships are not possible, but Nanotechnology is. And if Nanotechnology is possible so are Von Neumann Probe s. > > Maybe interstellar travel or > > the colonization of other planets will never be feasible. We know for a fact interstellar travel is possible because even asteroids can do it, it just takes longer than the lifetime of a certain bipedal animal, but 50 million years is nothing to a Von Neumann Probe . https://www.nasa.gov/planetarydefense/faq/interstellar > > > Secondly, we > > are assuming a lot about a civilization that would be dramatically > > ahead of us both culturally and technologically. Yes, I'm assuming they're not electronic drug addicts, if they are there would be no point in contacting them. > > > maybe a galactic civilization does exist but does not wish to be > > detected by the likes of us. > I don't see why a galactic civilization would give a damn if we knew about them or not, and even they can't hide from the second law of thermodynamics. Where is the galactic civilization's waste heat?? John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.