It's seems like we're in an interesting position at the moment. On the one hand we have the experience of about 20 years of the web, >15 years of heavy interne

It's seems like we're in an interesting position at the moment. On the one hand we have the experience of about 20 years of the web, >15 years of heavy internet usage, and so on. We've learned the various shortcomings of the systems that were originally put in place, and we've learned a lot of advanced techniques and technologies that can be brought to bear to build next generation versions of those systems. On the other hand we are burdened with 20 years of backwards compatibility concerns and network effect, making replacement systems hard to deploy and gain traction. IPv6 perhaps being the poster child in that regard.