## Core Concept A cognitive phenomenon where the brain selectively filters information based on what you are actively looking for or expecting. Once attuned to a specific object or idea, you suddenly notice it everywhere—whereas previously you would have ignored it. **Source**: Andy Hunt, *Pragmatic Thinking and Learning* ## The Mechanism **Attunement process**: Creating a mental placeholder (naming something, deciding to track it) activates selective perception. Your brain then scans your environment for relevant data without conscious effort. **Classic examples**: - Buying a new car model → suddenly seeing that car everywhere - Looking for the color red → noticing red objects you previously ignored ## Practical Applications ### 1. Knowledge Management (Wikis/Second Brain) **Creating Placeholders**: The simple act of creating a named page or section sets up a mental placeholder. **Triggering the Effect**: Once that placeholder exists, your brain uses sense tuning to scan your environment for relevant data. New, relevant bits of information "suddenly start to show up out of nowhere" simply because you now have a specific place to put them. ### 2. Managing Expectations and Bias **Warning about cognitive bias**: If you expect the worst from a person, technology, or situation, you are "primed" to see confirming evidence. Just as with the car example, you will notice plenty of evidence supporting your expectation because that's what you're tuned to perceive. ## The Radio Receiver Analogy Think of sense tuning like a **radio receiver**: - The radio waves (information) are always present in the air - You only hear the music (specific data) when you dial to that frequency - Creating a wiki page or setting an expectation = turning the dial - A signal that was always there suddenly becomes audible ## Strategic Implications **For knowledge capture**: Don't wait until you have complete understanding before creating topic placeholders. The act of naming and creating the container triggers the perceptual mechanism that helps you gather relevant information. **For cognitive bias**: Be aware that your expectations shape what you notice. Deliberately tune to both confirming AND disconfirming evidence to counter natural confirmation bias. ## Cross-Domain Applications - **Research**: Create topic folders before starting research to activate sense tuning - **Decision-making**: Name the problem to start noticing relevant patterns - **Learning**: Pre-create conceptual containers to prime perception during study - **Innovation**: Define problem spaces to trigger serendipitous discovery ## Related Concepts - [[L-mode vs R-mode Processing]] - Different cognitive processing modes - [[Harvesting by Walking]] - Related incubation technique - [[Pre-Learning Review Protocol]] - Systematic knowledge activation - [[How to Surface Connections Between Ideas (BASB)]] - Connection discovery methods --- **Discoverability Score**: 8/10 **Source**: Pragmatic Thinking and Learning (Andy Hunt) **Created**: 2026-01-16