Is Reality Even Real? Part 2 | Self-Deception, Consciousness & Objective Truth

If your perception isn't objective...How do you know what's actually real?

In Part 2 of this Decoded series, Elisabeth McKay explores one of the most unsettling questions in neuroscience and psychology: How does self-deception form, and why does it feel indistinguishable from truth?

Building on the foundation established in Part 1, this episode examines how attention, memory, emotional salience, prediction, and past experiences shape the reality you experience every day. Elisabeth explains why two people can experience the same event and leave with completely different conclusions—and why certainty itself may be one of the brain's greatest illusions.

In this episode:

• Why attention determines your experience of reality

• The Reticular Activating System (RAS) explained

• How the salience network decides what matters

• Why memory is reconstructed—not replayed

• Narrative formation and emotional meaning

• Why relationships break down over interpretation

• Trauma, prediction, and self-fulfilling prophecies

• The psychology of self-deception

• Reality vertigo and cognitive dissonance

• Plato's Cave and modern neuroscience

• Consciousness and the "hard problem"

• Simulation theory through a neuroscience lens

• Why objective truth still matters

This conversation connects neuroscience, psychology, philosophy, and behavioral science to challenge one of our deepest assumptions—that the way we experience reality is reality itself.

If Part 1 explained how your brain constructs reality, Part 2 explains why that construction becomes so convincing that it feels like truth.

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