It could take from hundreds to thousands of years to reach to a new stable, that may be worse than Cretaceous period. But the problem is not just the final temp

It could take from hundreds to thousands of years to reach to a new stable, that may be worse than Cretaceous period. But the problem is not just the final temperature, but the speed of change. Adaptation takes time, with things changing as fast as now few things will survive, and that may not include us.