Want to learn? Then get in the habit of always questioning your beliefs. I often hear from people who’ve exercised most of their life that “they know everything about lifting weights.” They claim they “understand what each exercise does and insist they do it with proper form.”
Memorizing exercises and attaching a perceived benefit to each of them (bench is for chest, dips are for triceps, etc.) does not demonstrate an understanding of exercise. In fact, it demonstrates one’s ignorance of the body.