– So it is, because it still is, it is just because it is still not isn’t.
– Yes.
– But so unstable…
– Not unstable only, it’s fragile; it’s extremely transient.
– Yes, much more transient than we thought, but, how is it possible? I
mean, in spite of its transience, why we are still able to witness it?
– Sounds puzzling. But just consider it: how can we witness? How is it possible we witness it via eyes, and brains?

Shu-Rong Zhou, & Da-Yong Zhang (2008). A NEARLY NEUTRAL MODEL OF BIODIVERSITY Ecology, 89 (1), 248-258 DOI: 10.1890/06-1817.1