Love the idea of a book based on spaces repetition, but wish they had a better way to get a sense of what you’re getting yourself into, since as far as I am abl

Love the idea of a book based on spaces repetition, but wish they had a better way to get a sense of what you’re getting yourself into, since as far as I am able to tell there’s no: - estimate of reading time - level of knowledge - way to link deeper content