Maybe this explanation is helpful:

There is an old, tried-and-tested learning algorithm called SR (Spaced Repetition)

(The algorithm used to determine when to show cards in flashcard programs)

The problem is that SR is a tool that only fits 1:1 structures,

and this structure does not match the structure of knowledge

What fits this structure is as simple as country–capital pairs or word–meaning pairs,

but not general subjects

Now, LearnObit has a solution for that!

The first step is to make a good note-taking tool

that mimics the tree structure for the purpose of organizing knowledge

The second step is to connect that note-taking tool with SR

Then SR can be easily used for learning information that has tree structures as well as 1:1 pairs

And since the tree structure is the structure of general subjects,

SR can be used for general subjects unlike in the past

Now SR is the normal way, not just for a few enthusiasts on the fringes