The intro paragraphs talking about the mental disengagement or decline or whatever we want to call it really resonated with me. It's something I've also taken measures to counter. In fact I'm on vacation right now to Basque Country. I read "A Basque History of the World" to prepare for the trip and that act reassured me I'm not getting less capable of engaging intellectually, I just have different intellectual interests now than the most intimate details of making websites for and serving them to customers at varying scales.