You're always in network partition -- the question is, how long is the network partition? It might be milliseconds. Maybe even microseconds.
But I don't agree that the CAP theorem only applies "when you're in network partition." An available (AP) datastore will have potentially inconsistent data if you write-then-read (ie, the write that you applied may not be read back) even if you "aren't in network partition."
But I don't agree that the CAP theorem only applies "when you're in network partition." An available (AP) datastore will have potentially inconsistent data if you write-then-read (ie, the write that you applied may not be read back) even if you "aren't in network partition."