Heuristics are shortcuts the mind uses to make quick decisions, and cognitive biases are errors in thinking. They simplify thinking but can distort reality. While logic focuses on truth, heuristics and biases just want to move you forward and are not part of logic.

Zooming in on heuristics. These shortcuts enable you to make quick decisions based on rules of thumb, and are often based on experience, patterns, or simplification of the complex. Imagine navigating a complex city without a map. You’re limited to what you see and your experience. You’d likely navigate toward familiar things, like following a river or highway. You might generally travel toward or away from nearby mountains. When deciding whether a mushroom is safe to eat, you might follow the heuristic, “If it looks familiar, it’s safe.” That’s the recognition heuristic in action. One more, the “availability heuristic” leads us to judge the likelihood of an event based on how easily examples come to mind.

Now, cognitive biases distort our perceptions of reality, are errors in judgment, and should be actively guarded against. Awareness of them is useful so you know not to trust them when evaluating new information. For instance, take “confirmation bias” which causes us to seek information that confirms our existing beliefs. That’s an error in thinking because your belief, or someone else’s, is not evidence. It’s a problem because no one can reevaluate every piece of information every time. Understanding this can help you focus on the usefulness of new information.

So, while heuristics simplify the complex, cognitive biases warp our thinking in ways we often don’t realize. Understanding them helps you recognize when a bias requires you to look beyond your first heuristic impression. For more on these traps, take the deep dive: Four Mind Traps.