How you plan to use sources will affect how you evaluate them. Not every source must directly support your thesis; sources can have other functions in a paper. They can
provide background information or context for your topic
explain terms or concepts that your readers might not understand
provide evidence for your argument
lend authority to your argument
identify a gap or contradiction in the conversation
offer counterevidence and alternative interpretations to your argument
provide background information or context for your topic
explain terms or concepts that your readers might not understand