Useless?

"So to put it simply, binding abilities to our Essence crystal engraves the necessary talent, or requirements into our Essence crystal, which changes our body? At the same time, abilities bound to our Essence crystal will grow stronger the more often we use them instead of the need to meet certain conditions to upgrade them? Is that what this means?" Yvonne asked rather calmly as she looked at the bunch of shelves all around her.

"And we can learn abilities from books by studying and comprehending them. As long as our body innately possesses the necessary requirements we can also learn more abilities than we can actually bind to our Essence crystals…and by gaining a higher comprehension of the abilities we'll be able to use these abilities even if we didn't bind them?" Kathrine added not hiding her confusion.

Dilan nodded his head, but even he was not really sure if it was that easy.