Assorted links

“Physical principles for scalable neural recording” maps the physical limits on brain activity mapping for several different methods. Potentially informative for whole brain emulation forecasting.
Humor: Thanks, Textbooks is a Tumblr for amusing, weird textbook writing. For example, here’s one textbooks “colloquial” explanation of the 2nd law of thermodynamics: “You can’t shovel manure into the rear end of a horse and expect to get hay out its mouth.”
Academic urban legends, a study.
Markov, “Limits on fundamental limits to computation.”