Some nodes have more connections than others. If most of these nodes send out a signal, it will seem to the other nodes that the majority of ALL nodes sent the

Some nodes have more connections than others. If most of these nodes send out a signal, it will seem to the other nodes that the majority of ALL nodes sent the signal, even if the highly-connected nodes are actually a minority. e.g. if the popular kids believe X, then to most people it will seem like the majority believe X, even if there are only a few popular kids.