Many years ago - 25? 30? - I read somewhere the expression "cognitive matrix". From then on, I think to my knowledge as a net of connections amongst information, concepts, stories, … I imagine it like in this figure
(I haven't studied neurophisiology: may be it corresponds to real links between neurons).
As I have written in the previous post, I feel to have learnt something when a new bit of information links in my mind to one of more of pre-existing nodes. Generally it's only a question of new nodes and connections. But sometimes happens that new nodes and their connections cause a reorganization of the matrix so that it has a new shape.
It has happened in my mind, for example, with the introduction of the open source concepts. They linked not only to pre-existing ideas related to computers, but also to economy, ethics, politics, ecology … in this way creating connections amongst nodes previously unconnected. My ideas on copyright and intellectual property changed and new ideas - sharing learning materials and cooperate in their production - grew in my mind.
This is the way I think my own mind. When I firstly heard "connectivism" - very few months ago - it sounded me very familiar.
To the question "what is connectivism?" I should answer: the way my mind works.