To unmask a liar, you only need to ask them two questions…

"Tell me exactly how it happened, step by step."

When someone tells the truth, they generally remember events with a certain fluency, even if they forget minor details. 

A liar tends to:

  • Being too lazy
  • Or excessively detailed in irrelevant parts
  • Avoid a clear chronology

Requesting a step-by-step reconstruction increases cognitive pressure.

Inconsistencies usually appear when the narrative needs to be structured.

2️⃣"What happened just before and just after?"

Here is the key question. 

Most lies concern the main event. What happens before and after is usually less prepared.

By extending the period:

  • Contradictions are detected
  • Changes in history
  • Unusual hesitations

Authentic memories usually include context. Lies focus on the essentials.

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