I think if you extend Nassim Talebs ideas of anti-fragile to human societies, the sensible future would be a more loose Federation of (city?) states. Very powerful central governments are undesirable from many, many perspectives. Getting more competing ideas on how to organize society introduces the same free market principles that have been successful for our economies into social structure. We'd have states that are winners and losers, and the losers would pretty quickly copy the winning strategies. You'd also have much less risk of your own government turning into a tyrannical oppressor - the splash radius of such an event would be much smaller.