[color=darkblue:5ac1b98bba]Maybe SETI ought to be looking here> just suppose that back in the day, around 3.5 billion years ago there was a stirring of life and, when the age of the dinosaurs began, assume there was a niche available for an animal that was able to think rationally and communicate its thoughts to others who were like him.
Assume around3.85 billion years ago that niche was filled by a dinosaur that had a very large brain case for such an animal and that evolution worked over the next couple of hundred million years to help this special dinosaur develop and increase. It is now still 4.05 billion years in and this dino is walking talking and teaching his children math and science in the dinoschool. Then along comes the great Cambrian extinction and of course this species of dino is taken out never to be seen again.
Is this possible could it have happened? (I know it wasn’t the cambrian extinction that took out the dinosaurs, give a guy a little space - please!!)
It would be fun to run one of the computer programs that shows the earth in motion over the eons and see what the future area will be. It would be very interesting to run the program positing the extinction of humanity in 2010 and see how long it would take the earth to recover from the contacts it had with us.
What would be left of Manhattan if there was no maintenance of the infrastructure or the buildings in 10 years, 50 years, 500 years, 1000 years, and then 100,000 years?