Critical thinking is the discipline of assessing information on its merits rather than accepting it because it sounds persuasive, originates from a familiar source, or appears professionally presented.

It requires actively questioning, evaluating, and applying what is read, heard, or seen, including what one already presumes to know. Information may be incomplete, outdated, biased, or inaccurate.

Errors and misinformation can arise unintentionally, but individuals and organisations may also deliberately circulate false claims, selective facts, or persuasive messaging to influence decisions.

Consider a WhatsApp message claiming that a particular food cures a disease. Before forwarding it, a critical thinker would ask: Who produced this information? What evidence supports it? Is the source qualified and current? Has anything material been omitted?

Critical thinking moves individuals from passive receipt of information to informed judgment.

Applying the Discipline in Practice

The core practice is to pause, question, verify, and compare before concluding or acting. Decision-makers should test each item of information against the following criteria:

• Relevance: Does it answer the question actually being asked?
• Credibility: Is the source reputable and qualified?
• Currency: Is the evidence up to date?
• Objectivity: Are facts clearly distinguished from opinion?
• Intent: Is the message designed to inform, persuade, advertise, or manipulate?
• Completeness: Does it present the full picture, or only one side?

These questions carry particular weight online, where nearly anyone can produce content that appears authoritative.

For matters of consequence, avoid reliance on a single source. Compare several credible, independent sources, and note where the evidence converges and where it diverges.

The Objective

The purpose of critical thinking is not blanket scepticism. It is to establish sound reasons for what one chooses to believe, share, or act upon.