>Once you're done That's the thing- I own many, many books (CLRS, Tufte's work, Graphics Programming Black Book, and dozens of others in the same vein) that I'

>Once you're done That's the thing- I own many, many books (CLRS, Tufte's work, Graphics Programming Black Book, and dozens of others in the same vein) that I'm never really "done" with because I refer to them at least several times a year. As a researcher/engineer/professional, they're as valuable to me as some of other of my tools (computer, arduino, breadboard, etc.). I suspect that that's what Paul implies in his essay, and that he refers to such books rather than "50 shades of grey". (but sure, when it comes to novels or such books, yeah you can just give them away after you've read them).