Here is why I think it is impossible to contact any alien civilization.
With the increasing number of extra solar planets been confirmed, the question becomes more and more of a perplexing issue: Why can't the human species contact or at least notice any other intelligent life form out there? The answer is rather simple yet even post graduates, better qualified then I am, somehow fail to see it
While by now even Johnny Bravo, has a crude idea of how vast the universe is, not even some qualified 'scientists' realize that distance is the much lesser problem and a indirect one at that, when it comes to finding/contacting intelligence 'out there'. The biggest problem is time. I am not going to go into details. The ones whom I address with this post, should be clever enough to figure out my point either-way.
1. If a alien civilization is 100years less or 100years more technologically developed the we are (at this time instant), a contact will be impossible, unwanted or not meaningful in terms of the returns on energy expended!
2. Although light travels at a very very fast speed by earthly standards, it is unbelievably slow moving by cosmic standards. (read with point 1)