Availability or vividness bias is the tendency to believe recent or vivid events are more likely to occur. There are all sorts of common examples of this, like how people perceive the risk of a plane crash or getting attacked by a shark. Both events are exceedingly rare, but are often perceived to happen more frequently than they actually do. It turns out that some biases are hard to overcome. The good news is, we’re actually able to use data to show the truth and prevent unnecessary actions that wouldn’t have had any impact.