You Are Now Less Dumb

The book explores various aspects of human cognitive biases and self-delusion, arguing that the brain frequently alters reality through psychological mechanisms to create a coherent personal narrative. Several concepts are introduced, including the illusion of external agency, where people attribute their emotional states to outside forces, and the sunk cost fallacy, which causes individuals to continue investing in something to avoid the feeling of loss. The source also examines phenomena like the backfire effect and confirmation bias, which protect existing beliefs from contradictory evidence, and the halo effect, which biases overall perception based on a single trait, such as attractiveness. Through experimental examples, such as the infamous Dartmouth-Princeton football game study and the case of the three Christs of Ypsilanti, the text illustrates how group identity and the need for meaning fundamentally shape an individual's view of the world.

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