2 hours ago, Jim D. said:
Good catch. I checked both editions of the book, and this is an error that crept into the second edition. The first has the correct "less than or equal to" sign in front of 60. No wonder that (in an interview I watched with Greweling) he said he was not thrilled (I'm paraphrasing) with the way the second edition turned out.
That's very interesting, do you have a link to that interview? Recently I got the second edition on Kindle, I saw a sentence under 'Fats' on page 272 that is clearly missing spaces. I was thinking no way this is in the printed edition, and yep, it sure is.