But what is interesting. If the time gap, and hence the difference in the levels of development of civilizations exist today, all this should sohratitsya in the future: it is not only we will not stand still. And if so, then in the future contact between us it is not feasible, because in the future to continue the impossibility of directional information exchange. The obstacles that exist in this way, can be demonstrated as follows. Today, it seems to us that if we will send with the help of some of the latest hardware signal containing a some basic information about us, say, one of the cornerstones of our culture - the Pythagorean theorem (the information should be simple, otherwise it will be impossible to decipher), any civilization, caught the signal, will be able to understand that he was sent quite intelligent creatures, and in proof of their understanding will give us the answer, having a some initial information about itself. Having mastered the basic concepts and principles of sharing, we can move on to more advanced forms of it.