We tend to think of the impossible as things that have never be done. Impossible is defined not by physics or reality, but by our understanding of it. It seems impossible because we are not able to find a way to accomplish it.
For categorical impossibility to exist, we must first understand something completely, and then determine that it cannot be done. By these criteria, we are confronted with two realities. There are very few things we understand completely. Impossible is an opinion.
It’s easier to call something impossible. It takes away the responsibility for you to find a way.
It might serve us to remove impossible from our vocabulary, and rather define it as something we do not understand completely. Yet.