Definition
Peer review is the independent evaluation of research by experts in the same field to ensure quality, originality, and validity before publication.

Introduction
Peer review is the scientific community’s immune system. It filters out weak reasoning, methodological flaws, and unsubstantiated claims, preserving the integrity of collective knowledge.

Explanation
In single-blind reviews, reviewers know the author’s identity, while in double-blind, both sides remain anonymous, minimizing bias. Reviewers assess clarity of problem definition, rigor of methodology, adequacy of data, and validity of conclusions.
Constructive feedback helps refine the manuscript. Revisions often strengthen arguments, clarify presentation, or demand additional data.
Although imperfect, peer review remains the cornerstone of credibility—transforming subjective effort into objective validation.

Key Takeaways
Critique is collaboration. Peer review transforms solitary research into community knowledge through accountability and improvement.

Real-World Case
The BMJ (British Medical Journal) conducts open peer reviews where both author and reviewer identities are visible, promoting transparency and ethical dialogue.
Reference: https://www.bmj.com