Fractals are infinitely complex patterns that are self-similar across different scales. They are created by repeating a simple process over and over in an ongoing feedback loop.
When humans make things, they are block like, rigid, linear. Most books are linear and follow a structure.
The designs in nature are like fractals. The design of the Qur’an is like a fractal. Even reading one chapter, or one verse, or one line of the Qur’an, tells you the message of the entire Qur’an.
Like a fractal, the Qur’an is a book of finite volume, but infinite depth.
And if whatever trees upon the earth were pens and the sea [was ink], replenished thereafter by seven [more] seas, the words of Allah would not be exhausted. Indeed, Allah is Exalted in Might and Wise. (68:1)