Author and librarian Nancy Pearl advocates the “Rule of 50.” This entails reading the first 50 pages of a book and then deciding if it is worth finishing. The Rule of 50 has an interesting feature: once you are over the age of 50, subtract your age from 100 and read that many pages. And when you turn 100, you are authorized (by the Rule of 50) to judge a book by its cover.😄😄