This is crucial for "Open Data" initiatives. It ensures that when one scientist sends data to another, the receiver doesn't have to guess what the column headers mean or how the numbers were calculated. Why do they matter?
They allow players to override or add new loot tables, structures, recipes, and functions. For example, a data pack could make it so that trees fall down instantly when chopped, or add new types of dungeons to the world. Data pack
For gamers, particularly in the Minecraft community, a data pack is a way to customize the game experience without technically "modding" the game's code. This is crucial for "Open Data" initiatives