Coined by Michael Crichton, this cognitive bias describes how we spot glaring errors in news articles about our own profession, only to flip the page and accept reporting on other subjects as credible. This explains why trust in flawed institutions persists, as we compartmentalize our skepticism.

Sam Harris reflects that the scientific differences he had with critics were quite minor but were amplified by the perceived political importance of the topic (race and IQ). In polarized fields, the line between scientific debate and political signaling blurs, with small disagreements often cast as fundamental, irreconcilable flaws.

Salient emotional events feel vivid and true, boosting our confidence in the memory. However, this confidence is often misleading. Each time we recall and "reconstruct" these memories, we create more opportunities for errors to creep in, making them factually less reliable than we believe.

We don't just forget our thoughts; we forget that we've forgotten them. This cognitive bias, like an amnesiac shocked by his aging reflection, causes us to overvalue our current anxieties, failing to recognize they will likely fade into oblivion like countless thoughts before.

The brain doesn't strive for objective, verbatim recall. Instead, it constantly updates and modifies memories, infusing them with emotional context and takeaways. This process isn't a bug; its purpose is to create useful models to guide future decisions and ensure survival.

McCartney tells a vivid story of George Harrison getting shocked on a milk float, only to learn George's memory was that Paul got shocked. This personal example highlights the fallibility of memory and the difficulty of establishing a single, objective historical truth, even for those who were there.

We vastly underestimate the volume of our own forgotten thoughts because, by definition, we can't recall what's been forgotten. This cognitive bug, the "forgetting paradox," means we should prioritize documenting ideas and not take any single thought too seriously, as most are ephemeral.

Behavioral geneticist Catherine Page Harden only truly understood Sam Harris's anger after she herself was labeled a "eugenicist." This demonstrates that intellectual disagreement is vastly different from the visceral experience of public caricature, making empathy difficult without shared suffering.

Each time you remember something, your brain is not playing a recording but actively constructing a new experience. This process is influenced by your current beliefs and mood, using the same neural networks responsible for imagination. Memory's purpose is to guide the present, not preserve the past.