Your web orders and takeout pizza, it's all wrapped in the same raw material that makes up your paper notebook: wood pulp. Much like a baker can bake different kinds of bread, paper mills can make paper and cardboard qualities by mixing recycled and fresh wood fibres (thin, firm, supple, strong, etc.) Just look around you and feel the difference.

You may not be aware of it at first glance, but the fact that your recycled paper diary has such good writing quality is not a given. Simply put, you can't recycle paper and cardboard indefinitely.