One key point could be the importance of presenting a diverse range of perspectives. Adichie might stress that when we only tell one story, we limit our understanding. For example, if we only hear one side of a cultural story, we might form stereotypes. Another point could be about the power of storytelling itself. By telling more complete stories, we can break down barriers and build connections between different groups of people.
Well, in 'adichie on telling one story', perhaps a significant aspect is the idea that a single story can be misleading. Adichie may argue that it gives a narrow view. Just like if we only know one type of success story in a particular field, we might think that's the only way to succeed. Also, she could be emphasizing how different stories within a larger narrative can add depth and truth to our overall perception.