PPF courses are a free resource for anyone who wants to integrate parts of this podcast into their teaching or other kinds of study. But they are also for anyone who simply wants to go deeper into some of the subjects we cover in a more structured way. We offer opportunities for further reflection, for wider reading and for short pieces of writing. When so much of our reading and writing is being done for us by machines, we want to provide an opportunity for listeners to reclaim some of that intellectually productive work for themselves.