http://nautil.us/issue/14/mutation/if-the-world-began-again-would-life-as-we-know-it-exist
http://nautil.us/blog/what-an-extinct-bird-re_evolving-says-about-species
Stephen Jay Gould asked, if you could "rewind the tape" and start again, would the same species evolve in exactly the same ways? We'll never know for sure, but for the rails of Aldabra, the answer seems to be yes.