Narratives Add

This year at Carleton I’ve gotten to teach one of my favorite parts of multivariable calculus, the multivariable chain rule. Despite its scary-sounding name, the multivariable chain rule seems to capture a fundamental principle about how the world works, a principle I call “narratives add.” I’ll walk you through how the multivariable chain rule works … More Narratives Add

Three questions to ask instead of “Is it safe?”

Minnesota has recently gone from its “Stay Home” order to a series of “Stay Safe” guidelines for which activities to reintroduce when. Here’s an example graphic posted by our governor last week: This type of advice puts each activity at any given time into one of two buckets: “Allowed” or “Not allowed.” And that makes … More Three questions to ask instead of “Is it safe?”

10 percent liable

Last month, this New York Times headline caught my eye for three reasons: Netherlands Was 10 Percent Liable in Srebrenica Deaths, Top Dutch Court Finds Reason #1: Having lived in the Netherlands, headlines about Dutch affairs usually stick out to me. Reason #2: I’d just been reading The Themis Files, a fiction series in which … More 10 percent liable

What we can’t spend

Some things, like money, time, and effort, are scarce resources that need careful budgeting to be used optimally. Some of those, like effort and attention, can return stronger after resting from difficult use, as if they’ve been built up like a muscle through exercise, which makes the calculus of optimizing how much and when to … More What we can’t spend