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How can a text have two or more main ideas? | Reading | Khan Academy


3m read
·Nov 10, 2024

Hello readers. Today, I want to begin with a brief aside about physics. Unless you're like a quantum particle or something, it's not possible to be in two places at once. Nor is it possible to travel in two directions at once. Right? If I'm on a train from Chicago to Pittsburgh, I can't simultaneously be on a train from Chicago to Omaha. So, my body can't travel in two directions at once, but my mind can.

What I know is it is possible to think two ideas at the same time. Ideas that are equally important but may not necessarily support one another. I can be thinking, "It's hot outside," and "I'm late for my train," and those two ideas can have equal weight in my mind. The same thing can happen in texts, an essay where an argument or a book can have two or more main ideas. It's a train that can go east to Pittsburgh and west to Omaha at the same time.

This is a confusing idea. When you look at an essay, you think, "What's the main idea in this text? What is the author trying to tell me?" or "What position are they trying to convince me of?" So, how can there be room for more than one idea? How can we tell that a piece has two main ideas and not just one idea with supporting evidence?

Alright, here's an example of two main ideas: Sharks are deadly predators and fierce hunters. They hunt with sharp teeth, incredibly sensitive noses, and the ability to sense the electrical current of a living body. Many people are afraid of sharks because encounters with them can be fatal. That's paragraph one.

However, sharks need to be protected because they are important to ocean ecosystems. Their roles as high-level predators ensure that they maintain population levels of smaller fish, which in turn maintains the balance of ocean plant life. If there were no sharks, algae could take over the ocean.

Now, both of these paragraphs are about sharks. So, in one sense, it's true that the passage as a whole is about sharks. I just draw a little shack. He's so scary; look at those very sharp teeth. Anyway, the topic is sharks, but what's the idea here in each paragraph?

Paragraph one says sharks are deadly, and here's why. Paragraph two says it's because of their deadliness that they need to be protected because big predator species balance ecosystems. These are two ideas that are separate but interrelated: sharks are deadly; sharks need protecting.

On its face, those two ideas almost seem like they contradict each other or cancel each other out. But they are two separate threads that each support the overall topic of sharks. There are two distinct ideas here with equal importance. This passage teaches us that A: sharks are deadly, so they are scary; and B: deadly animals must be protected because they are important.

Neither of these ideas is more or less important than one another; they are both main ideas. When you're considering whether or not there are two or more main ideas, ask yourself: Are both X and Y equally important understandings from this passage, or is it just one idea supporting another?

So, with this in mind, you too can learn to travel in two directions at once. With the power of your mind and the power of reading, you can learn anything.

Dave, out. How can you be in two places at once when you're not anywhere at all?

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