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If you consider the Drake Equation (http://en.wikipedia.org/wiki/Drake_equation http://en.wikipedia.org/wiki/Drake_equation), there are probably millions of ali
by joshuaheard 12y ago
If you consider the Drake Equation (http://en.wikipedia.org/wiki/Drake_equation http://en.wikipedia.org/wiki/Drake_equation), there are probably millions of alien civilizations in our galaxy alone that could send craft to our planet. If that is true, they would certainly observe and study us, much like we observe and study lesser animals. And to avoid harm to their subjects, the aliens would likely avoid detection. So, even though I think 90% of UFO evidence is terrestrial phenomena, the odds are in favor of alien race(s) visiting us, so it's possible some UFO evidence is of alien craft.
- outsidetheparty 12y agoOr if you choose different values for the variables in the Drake Equation for which we have only a single known data point -- i.e. most of them -- there is probably exactly one civilization in the galaxy.
- el_zorro 12y agoI think you fundamentally misunderstand the statistics and distances involved here. Millions of civilizations? Only if you take the most optimistic of all statistical stretches. I personally think that there are at most a dozen civilizations that are within our technological range +- 10,000 years (really generous given the enormity of time) and the speed of light conspires to keep them forever beyond our reach. Aliens do not walk among us.
- delecti 12y agoWhile the Drake Equation indicates that there are probably loads of other intelligent species in our galaxy, there's no reason to think that it's practical for them to visit.
- ArtDev 12y agoEspecially that a craft will have to travel for millions of years to get here! Heck, we only evolved very recently on this planet. If humans don't go extinct in the next 2-5 million years, then maybe its possible to get a visitor (but I wouldn't bet on it).