I find this concept very interesting, and important as we move from our current navigation/UI to new forms. New Scientist’s coverage:
SITES that evolve as if they were living organisms are making their way onto the internet.
This ability to adapt without human intervention allows sites to stay up to date with changes in their users’ tastes and can result in designs that are more user-friendly than anything a human designer is likely to come up with. Evolving sites might also allow web designers to home in on the features that work best for users.