|
As the others said, we don't know for certain, but we can predict with a high degree of certainty that a situation exists based on our knowledge gained from observations over time. The very fact that astronomers can detect planets too small to image, orbiting far away stars, by the application of science gained through observation, shows that at least some of us have some intelligence. Unfortunately, most of the human race doesn't have the intelligence to realise that we are rapidly destroying our environment and most other living creatures that share it, despite the fact that the causes and effects are clearly visible.
|