A mental shortcut where we judge the likelihood of something based on how much it resembles what we expect or associate with it—rather than on actual data or probabilities.
If something looks like something familiar, we assume it is that thing—even when it’s not.
Why It Happens
- Our brains love patterns and quick categorization—it’s how we make sense of the world.
- We use stereotypes (visual, behavioral, or procedural) to make fast decisions.
- We prefer familiarity over accuracy—so we use what “seems typical” instead of digging deeper.
- This heuristic saves mental effort, but can lead us to the wrong conclusions.
Why It Can Be Good
- Helps with rapid decision-making in familiar contexts.
- Allows experienced workers to spot issues quickly based on pattern recognition.
- Can be useful when there’s not enough time to analyze everything in detail.
- Supports intuitive troubleshooting, especially when informed by experience.
Why It Can Be Bad
- Leads to assumptions based on surface similarities.
- Causes us to ignore important differences between situations.
- Can lead to stereotyping people or problems, even when they don’t fit the pattern.
- Encourages us to overestimate how likely something is, just because it looks familiar.
How It Shows Up in Leaders
- Assuming a crew member is competent/incompetent based on how they look, dress, or speak.
- Thinking a task is “just like the last one,” and skip steps or don’t reassess hazards.
- Assuming an issue is the same one you’ve seen before, and don’t investigate further.
- Assuming someone is “not a safety risk” because they’ve “been doing it a long time.”
- It might sound like: “This looks exactly like that thing that happened last year.” “He seems like he knows what he’s doing.” “It’s probably the same problem as before.”
How It Shows Up in Teams
- Crew members judge new coworkers based on superficial traits (“He’s green, so he must be careless”).
- They assume similar-looking jobs are equally safe, even if conditions have changed.
- They follow a routine approach without checking for differences in layout, weather, or hazards.
- They respond to risks based on what it looks like, not what it actually is.
- They say things like: “We’ve done this a hundred times.” “It’s the same job—no need to overthink it.” “You can tell by looking.”