Abstract: Collaboration using extensible state sharing, each state including information dimensions, a subsequent state based on one or more previous states and being associated to the one or more previous states by a path. Receiving, by a computer, a state and determining, by the computer, if a stored state is within a proximity threshold of the received state based on the information dimensions of the stored and received states. Responsive to determining a stored state is within a proximity threshold of the received state, merging, by the computer, the stored state and the received state.