Being able to stand the test of time is one of the most important characteristics of any social web.  An idea must be malleable in order to do this; if Christianity had not changed to suit the needs of the populace, it likely wouldn't have lasted the 2000 years that it has.  
  
The true brilliance of the Representative Democracy of the United States was that it admitted upon formation that perhaps it didn't have everything right - and included mechanisms to change over time if necessary.  The USA wouldn't have lasted past the Civil War had these not been included.  This was a huge advantage over the traditional and rigid monarchies (and we can see how this idea of malleable representative democracy is spreading throughout civilization now).  
  
As long as a currency can walk the fine line between being able to change with the times and 'standing for something' then it has a bright future.  
  
It also needs to be understood that the classic concept of a 'century' is accelerating.  What took from 1600 to 1700 to occur now happens in 20 years or less.  In many ways the world of 2015 is as alien to the world of 1995 as 1700 was to 1600.  As we go forward this leap will happen faster and faster and money, language, and religion will need to keep up if they hope to stay relevant.  
  
It's likely the next 'century' will only last 15 years.  The world of 2030 may be a strange and alien place to us humble folk from 2015.  Let's hope (and work towards ensuring that) Cryptonote based coins like Aeon can stand the test of time.