It is important for an author to use a specific sequence when developing key ideas about the topic in a text because a logical order helps readers to follow the author's reasoning and enhance comprehension. A well-organized sequence allows readers to build upon their understanding as they progress through the text, making connections between ideas, and retaining information more effectively. Furthermore, a coherent structure can guide readers through complex arguments, ensuring that they grasp the nuances of the content.
As for the skills we develop while reading longer texts, you could complete the sentence with the following: "Critical thinking, analytical reasoning, and effective communication are skills that will help us perform all kinds of practical tasks in the future."