There would be over a hundred billion people today if nobody ever died, and that's only counting the humans. The practical reality of the world since the dawn of life has been that if you want to shake up the genetic Lego box and create new creatures, the old creatures have to die. Eventually.
The analogy is not perfect. To create new Lego creations you have to destroy the old ones first. But analogies are never perfect. They're just a starting point to get a rough understanding.
The analogy is not perfect. To create new Lego creations you have to destroy the old ones first. But analogies are never perfect. They're just a starting point to get a rough understanding.