<ul><li>The topic of the post is related to error prevention and handling in Human-Computer Interaction (HCI) usability.</li><li>The author shares an experience of creating an event schedule and editor interface for a client's website.</li><li>The client asked about manually sorting events, which prompted the author to reflect on the difference between mistakes and errors.</li><li>The author discusses the importance of understanding errors and mistakes, and the different ways of handling them.</li></ul>

A Mistake Is Not An Error

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