Yes. Read it long ago along with many other books on trout behavior. Have you seen any of the fantastic 'underwater' videos that let you see trout actions in the water? In them, some previously proven facts are disproved. As I wrote, if someone was to read and view all the 'scientific' information out there, the conclusions based on one or a few of the studies out there could and would be disproven by other studies or actual observations. Interesting reading and experiences - Yes! Proof that the conclusion(s) expressed because of a particular study - No!
My point - Don't be fogmatic in your fishing, observe, experience, learn, be open to changes in environment, be flexible and adjust based on those change, and most importantly - have fun.