"<a href=""https://www.youtube.com/watch?v=-jA2ABHBc6Y&amp;t=43m46s"">43:46</a> Would be odd if all intelligent life is thinking the same way. Let them call us first. I think there may be a panspermia angle to this. With particular regards to how the limbic portion of the brains may have evolved around the galaxy. <br><br>The making of this comment", ought not to suggest that one civilization wanting to reach out to another is a good idea or not. I think there is a model that can be built for something like that.