A thousand years ago it was unthinkable we could circumnavigate the globe.

We don’t understand quantum mechanics and we don’t understand gravity. There’s no reason to assume that we won’t find ways to travel the universe, e.g. by manipulating space time. We just don’t know what we don’t know.

If you had to bet based on past achievements, humanity will find a way. Our job is to push the limits as much as we can and build a foundation for future generations.