As we are the authors of all the notes, we learn in lockstep with the slip-box. This is another big difference from using an encyclopaedia like Wikipedia. We use the same mental models, theories and terms to organise our thoughts in our brains as in our slip-box. That the slip-box generates an excess of possibilities enables it to surprise and inspire us to generate new ideas and develop our theories further. It is not the slip-box or our brains alone, but the dynamic between them that makes working with it so productive.