Neil deGrasse Tyson explains that space itself has no reason to be curved if all matter and energy are removed.

“If the Since the curvature of space and time is the manifestation of matter and energy, if you remove the matter and energy, there's no reason for the spacetime to be the matter and energy, there's no reason for the space-time to be, to be curved at all. to be curved at all.”

If the fundamental constants of the universe were slightly different, the history of the universe and our existence would be fundamentally altered or impossible.

“if the constants of the universe gravitational speed of light whatever we're all tiny tiny bit different like different one part in a billion or something maybe in our daily lives we would not notice but over the history of the universe things would be so fundamentally changed that our existences wo”