You manage to neatly encapsulate why I find him so frustrating. "feels uncharitable and too reductive" I'm old enough to remember when the law suits, a flagge

You manage to neatly encapsulate why I find him so frustrating. "feels uncharitable and too reductive" I'm old enough to remember when the law suits, a flagged throwaway comment briefly mentions, were going - my recollection is of a lengthy effort to deprive the other developers of the fruits of Mathematica labours. That colours later impressions. Charitable isn't necessarily always the right take... Still, that's an aside here, and perhaps I was too sweeping. It's difficult as there are rare times, like this one, where the topic is fascinating and well explored, and the self-promotion is, for Stephen, light touch. It's well known he was a child prodigy, so I'm sure many people and events had part in boosting his ego and innate sense of exceptionalism, resulting in the personality we know. So I don't entirely blame him for it... "arrogant self-promotion of the highest order, by one of the most productive and insightful thinkers of our time." You're not wrong. He'd probably be well served employing someone to bring a lighter touch, via an editing pass to all output. I end up not finishing articles he writes on topics I might otherwise find hugely interesting. Solely because too much prose is spent telling me he's brilliant, rather than simply showing it. For me at least, the style of delivery has cost the message - as I stopped regularly reading him as far too frustrating, ages ago. :)