# Availability Heuristic > [!note] Thin redirect > The canonical entry for this bias lives in the Munger Biases subfolder under its Munger-tradition name: [[Availability-Misweighing Tendency]]. This entry is a thin redirect so the [[Decision Science]] maps 1:1 to vault entries. **The bias (one-line summary):** Tendency to estimate the size or probability of categories by how easily examples come to mind, rather than by actual base rates. Vivid, recent, emotionally-charged examples come to mind more easily — and therefore feel more probable than they are. The full treatment of this bias — including KB applications to fear-driven politics, conspiracy thinking, and the propaganda value of vivid examples — is in the Munger Biases entry. [[Daniel Kahneman]] and [[Amos Tversky]]'s 1973 paper is the academic foundation; [[Charlie Munger]]'s lattice-style treatment is the applied counterpart. ## See Also - [[Availability-Misweighing Tendency]] — Canonical entry - Negativity Bias — Closely related: negative examples come to mind especially easily - Neglecting Probability — Often paired: availability-driven estimates plus base-rate neglect - Anecdotal — The argumentative form: vivid case as evidence