The Escalator of Reason

When I wrote some scattered comments about Steven Pinker's book The Better Angels of Our Nature last week, truth be told I had not quite finished the book -- I had about 70 pages to go.  That wasn't the best time to make a final assessment of such a thick book, like the way you should never evaluate a backpacking trip while the pack is still on your back.  It so happens it was especially unwise