An important aspect in epidemic protocols is the ability of a node P to choose
another node Q at random from all available nodes in the network.As it turns out, and somewhat counter-intuitive, a PSS can be
built using an epidemic protocol.As explored by Jelasity et al. [2007], each
node maintains a list of c neighbors, where, ideally, each of these neighbors
represents a randomly chosen live node from the current set of nodes.A solution is to construct a fully decentralized peer-sampling service, or
PSS for short.