I just had a thought about humans and this whole wold. The technology is growing so fast. During the last century most of the advanced technologies came in to existence. Now I can simply video chat with my friend in USA, send him photos, sync with him and work on same task., and do so many things with the current technologies. Within another century we might be able to contact other lifeforms in the universe if we were able to develop our technologies like this. Shouldn't we be happy about that and be energetic. I don't think so.. Y? There are 100 to 200 billion galaxies in the Universe, each of which has hundreds of billions of stars. There has to be billions of civilizations out there. If the technology can be sustainably develop in to such a state that we are able to travel through Universe and contact other life forms, there has to be some one trying to contact us right now. But there aren't any.. So what does that tells us? It simply says we can't