I have seen plenty of miss-use of solutions of the following though:
1. Struggle with exercise.
2. Check proposed solution.
3. Thinking that your understanding of the proposed solution constitutes an ability to solve it yourself.
This is analogous to the original problem, where you assume the ability to follow reasoning translates to being able to reproduce it.
The main use of exercises without solutions is to try and force students to go to their teachers and interact, so that someone can try to pinpoint what exactly the missunderstanding is.
This can probably be better done with assigned homework. However grading can be time consuming, so trying to filter so that only those that have problem with specific exercises come to see you is one way to try and get some time economy going.
Also yeah. This is better in course specific work sheets than in books, since books should be self contained enough to be usable without the guidence of TAs or professors.
1. Struggle with exercise.
2. Check proposed solution.
3. Thinking that your understanding of the proposed solution constitutes an ability to solve it yourself.
This is analogous to the original problem, where you assume the ability to follow reasoning translates to being able to reproduce it.
The main use of exercises without solutions is to try and force students to go to their teachers and interact, so that someone can try to pinpoint what exactly the missunderstanding is.
This can probably be better done with assigned homework. However grading can be time consuming, so trying to filter so that only those that have problem with specific exercises come to see you is one way to try and get some time economy going.
Also yeah. This is better in course specific work sheets than in books, since books should be self contained enough to be usable without the guidence of TAs or professors.