Thank you ToSeek for that great link. I am very surprised at the negative response on this forum of the best theory (that I have seen in years) of why we see no evidence of alien life. I have very great respect for the opinions on this forum, the place I come to for comfort. LOL. Seems to me that most of the negative responses were of misinterpretations of what was intended?? I think that ravens_cry has one of the best answers to this theory “but does a single planet have the resources to develop the infrastructure to plunder the vault of heaven?” I was really feeling stupid until I came upon this remark. I may change my mind after rolling this story around in my gray matter for awhile. I will continue coming here for comfort!!