How Many Adjuncts Read the Textbook for Courses They Teach

[UptonSinclair]

I am working on a course that uses a textbook that has outlived its useful life with too many revisions. The materials are scattered though the text with references to other chapters making the textbook little more than a reference work.

It got me thinking. How many instructors have actually read the textbook used in their course. I am not talking about reading summaries or publisher provided answers to end of chapter questions. I am talking about actually reading the textbook to understand its contents. Since adjuncts are not paid to spend this extra time in course preparation, I am guessing the number is quite low.