Oh. Right. That couldn't happen, because they are dead, and all cognitive functioning that could have happened has ceased. Maybe they were religious dinosaurs, maybe atheists. Something to think about:
the earth is 4.6 billion years old. Lets scale that to 46 years. We have been here for four hours. Our industrial revolution began 1 minute ago. In that time, we have destroyed more than %50 of the worlds forests.
This isn't sustainability.
The Singularity won't save us, either.