Minecraft wiki entry for Experience_farming, associated text: Experience is a tricky resource: It is needed for enchanting, combining and repairing items, and for fueling the Mending enchantment. Many desired jobs require large amounts of experience -- but it can take quite a while to accumulate a high experience level, and when the player dies, they lose essentially all of their current stock. Accordingly, many players will resort to "experience farming" -- arranging a situation where they can pick up large amounts of experience when desired. These fall into several categories, reflecting the many sources of experience, but most of them can be considered in terms of experience per time -- either active or AFK time, with the player involved, or "accumulation" time before collecting the results.