Originally Posted by Joe87

However, we haven't been successful for very long, yet. It may be that our ability to manipulate our environment will soon exceed our ability to avoid irrational or unexpected catastrophies of our own making and thus put a quick end to our evolutionary experiment in increased intelligence. It could happen in an evolutionary eyeblink, a few tens or hundreds or thousands of years - in fact, if we last a million years it would be a huge success - if we can survive that long, we can probably survive much longer. The jury is still out on this, and we don't know when they will return to render their verdict.