This week has been a fascinating collision of theory and practice. It started in a Theory of Knowledge (ToK) PD session run by John Sprague, where we were exploring maps as a source of knowledge . We examined how different maps of the same place can tell completely different stories, reflecting the knowledge communities of their creators. It got me thinking: What would a mathematician's  map look like? (Lots of vectors and stats, I imagine!) But the metaphor hit home on a per