My guess is that it’s related to what makes spaced repetition work—the process of switching forces the reader to recall the context and previous facts. See if you can even vaguely recall where you read this; I’d like to take a look at any pertinent research.
My guess is that it’s related to what makes spaced repetition work—the process of switching forces the reader to recall the context and previous facts. See if you can even vaguely recall where you read this; I’d like to take a look at any pertinent research.