When RobDurdle.com just wont do…

You used to be able to ask Edward Tufte questions on his website.
He disabled the new questions part a few years ago so only a topic or
two a month comes out now. But the old topics form years long
conversations running to tens of thousands of words, generally polite
and insightful. Here are some excellent threads: recommendations for graphing software, Book design: advice and examples, Medical information exchange: The patient, doctor, computer triangle, Evidence and assumptions in tree diagrams, Airport maps, Lists, Advice for effective analytical reasoning, a celebration of Megan Jaegerman’s news graphics, Design of causal diagrams, the merits of ISO paper sizes.