George Floyd Was My Neighbor

…I was taking a walk in our neighborhood with my husband yesterday evening, enjoying an ice cream treat and talking about the above when we found ourselves witness to an arrest. For some reason, I had the thought that perhaps we should stay and make sure the arrested man (who was black) was okay, since the police officer I saw was white. Instead, I thought that it was probably fine; that there was no reason for me to involve myself…

Maps to Enlightenment

…I don’t remember hearing the term “map” used as a synonym for “function” before reading Conceptual Mathematics, so I had to think about why that word was used. Encyclopedia Britannica says it’s because mathematical maps are an abstraction of geographical maps, but how is that, exactly? To make a geographical map, you visit a place, and then make a mark on a piece of paper (or some pixels on a bitmap) to represent what you saw there…