### Time evolution of the network

According to Hausmann, Hidalgo et al, increased economic complexity is necessary for a society to be able to hold and use a larger amount of productive knowledge \cite{2014}.
It is important to understand the dynamics of crypto networks’ productive structures for two reasons: structure changes over time, and, knowledge dies if it is not transmitted. It is possible to simulate those changes because the social structures behind crypto communities follow well-known models. Let us analyze the particular case of the social network producing attention towards the Bitcoin SegWit2X hard fork.