Morton 95: "An ecosystem is vague, in the sense that [...] paradoxes arise when one attempts to define them precisely."
"How many blades of grass do I have to remove for this meadow not to be a meadow?"
96: "There is a meadow, but we can't point to it directly, because it's not constantly present [...] [T]he meadow is a set of things such as voles that are not meadows. A meadow is an implosive whole made of partial objects."