The potential for sharing of knowledge, were extraterrestrials to actually be contacted, might well be more limited and difficult than might first seem. The extraterrestrials will have evolved on a different world, perhaps along lines so alien to that of Earth's life that it would be utterly impossible to understand what they would have to say, even if they could be heard. They could simply be too alien. There is no reason to believe that any aliens are going to benevolent they could very well be hostile. (Brin, 2006) We should not therefore be attempting to contact aliens to share technology rather we should be focusing on advancing our own technology. 1 Brin, David. 2006. "Shouting at the Cosmos". Lifeboat Foundation.