A good reviewer is expected to provide constructive feedback that helps authors improve their work. This involves critically evaluating the manuscript, identifying its strengths and weaknesses, and suggesting potential improvements. A good reviewer should also be able to communicate their feedback clearly and respectfully, taking into account the author's perspective and expertise. Furthermore, they should be able to maintain objectivity and avoid personal biases, ensuring that their feedback is fair and unbiased. Ultimately, a good reviewer plays a crucial role in the peer-review process, helping to ensure the quality and validity of research publications.