Getting to the point - rethinking arrows on maps

https://www.tandfonline.com/doi/epdf/10.1080/00087041.2023.2178134

Contains an interesting history and theory of arrows on maps (they represent literal arrows! This is something I had not considered before) and goes into how they can be productively used and some alternatives. Uses maps of refugee migration from Ukraine as a motivating example where arrows may not be appropriate symbols for conveying mass movements of refugees.