Tim Urban of the wonderful Wait But Why blog recently wrote two posts on machine superintelligence: The Road to Superintelligence and Our Immortality or Extinction. These posts are probably now among the most-read introductions to the topic since Ray Kurzweil’s 2006 book.
In general I agree with Tim’s posts, but I think lots of details in his summary of the topic deserve to be corrected or clarified. Below, I’ll quote passages from his two posts, roughly in the order they appear, and then give my own brief reactions. Some of my comments are fairly nit-picky but I decided to share them anyway; perhaps my most important clarification comes at the end.