Advanced civilisations could be indistinguishable from nature

The Fermi paradox is about the lack of advanced space-faring civilisations we have come across (none) given that there are a lot of stars in the galaxy, which should have a lot of habitable planets surrounding those stars.

There are a few solutions to this:

1. Life is not so common. And advanced civilizations are exceedingly rare. We could be the only one.
2. The great filter solution. There is a step that no civilization has been able to pass. A natural catastrophe, war, something that kills civilizations before they can become space-faring.

There is an underlying assumption in the reasoning behind Fermi paradox. It is biased on only one observation: our own history, our own planet. Our evolutionary history might not be common through the universe.

There could be a sustainability solution to the Fermi paradox which is postulated in this research, titled: The Grass of the Universe: Rethinking Technosphere, Planetary History, and Sustainability with Fermi Paradox). That is humanity needs to transition to sustainable development in order to avoid collapse.

And if, other civilisations in the universe come to a similar conclusion then there worlds would look very close to nature. There would be a convergence with nature.

And so the way we are looking for life outside of our solar system might not find anything. This breaks the Kardashev scale as well. As there is just no need to consume more and more. To build Dyson spheres to get energy from our local stars. Then, systems to consume energy on a galactic scale.

Food for thought.