What You See Is All There Is

System 1 builds the most coherent story it can from the information at hand and treats it as complete, ignoring what is unknown or missing. The quality of the story, not the quality or quantity of the evidence, drives confidence.

Why it Matters

WYSIATI explains overconfidence, framing effects, and jumping to conclusions: judgments rest on the available evidence as if it were all the evidence. Missing information is simply not represented in the mind.

Signals

• High confidence drawn from thin evidence.
• Never asking "what would I need to know to be sure?"
• A coherent narrative silencing doubt.

Benefits

Naming it prompts the missing question, the absent data, and the alternative story.

Risks

Confident conclusions from incomplete information; coherence mistaken for correctness.

Tensions

Acting on the available information is necessary, but treating it as complete is the error.

Examples

Forming a strong impression of someone from a single trait; a confident strategy built only on the data that happened to be at hand.