What is the purpose of the source?
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To inform? teach? sell? entertain? persuade? Which of these might be most valuable to you as s source? Do you think a website trying to sell you nutritional products might "spin" their argument in favor of what they sell? Probably so, and that's not great. If an article is trying to teach you something about black holes, might that be more believable? Of course!
Fact or opinion based?
- You need to determine if the article is fact or opinion. This is important. Not everything you read on the internet is true. Not everything you read in an article is true. So you must be able to differentiate fact from opinion.
- Some sources are trying to tell you what is true. Other sources may be trying to persuade you that something is true.
- Honest sources will let you know they're trying to persuade you, like opinion pages of a newspaper.
- Less honest sources will try to mask their persuasion. Watch out for those sneaky ones!
- Think about it this way: Is the source on a controversial topic? Does it reflect different sides of that argument? Does it represent all sides equally? Sources that talk about opposing points of view are often better than those that do not.
- It's important that sources of objective and impartial ("Just the facts, ma'am!") Look for political, ideological, cultural, or religious favoritism, and make sure the source isn't trying to score points against "another side".
Are the claims/conclusions supported?
- When the author makes claims or comes to conclusions, make sure he tells you how he came to that conclusion. A good source will let you know where the information came from!
- Make sure, too, that the claim or conclusion is supported with facts you can verify.