> How is it much different from a search index? A search index usually links to the source. Without that a search index is worthless, you can't use content if

> How is it much different from a search index? A search index usually links to the source. Without that a search index is worthless, you can't use content if you don't even know where it comes from and who holds the rights. Google search links to sources like Wikipedia in its info boxes, because without that you can't know whether the info is reliable or sourced from my brother's coworker's imaginary flat-earther friend.