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"i dont know" vs "how do i know if this works"

The two phrases are not directly comparable as they serve different purposes. 'I don't know' is a statement indicating a lack of knowledge or uncertainty, while 'How do I know if this works?' is a question seeking information about the effectiveness of something. They are used in different contexts and cannot be interchanged.

Last Updated: March 19, 2024

i dont know

This phrase is correct and commonly used to express uncertainty or lack of knowledge.

This phrase is used when someone is unsure about something or lacks information on a particular topic.

how do i know if this works

This phrase is correct and is used to inquire about the effectiveness or functionality of something.

This phrase is a question seeking clarification on whether a certain thing or process is effective or functional.

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