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I hadn't really thought of that, even though it's something I knew! Though, if we do exist contemporaneously with other intelligent species, it would make me wonder if we are in some kind of optimal time for intelligent species to exist and why this would be so. In such a big place, it's no wonder it's easy to be self-absorbed.I think it is probable that other galaxies have intelligent species but we can't see them because we are only able to see old galaxies. We see light from galaxies as they were billions of years ago. Those galaxies could be teaming with intelligent life right now but we can't detect them right now.