Paolo Friere's defined learning as an "act of knowing". The interaction used was between a teacher with his/her maximally systematised knowing and a learner, with minimally systematised learning.
Could we relate this model to two adult learners? To adult learners who, whilst not expert, were in charge of their own learning and so to some extent autonomous?
Interacting (dialoguing) with other autonomous learners could increase the systematisation of the learning, thus achieving learning by Freire's definition.
Please view on Slideshare and look at the notes under each slide, which describe the process: