"For all one knows" is a phrase that is used to indicate uncertainty or lack of knowledge about a particular situation or outcome. It suggests that the information being discussed or considered could potentially be wrong or incomplete and that there is no definitive way of confirming or denying it.
This phrase is often employed to introduce a hypothetical possibility or to acknowledge the existence of alternative interpretations or explanations. It acknowledges that despite one's best efforts to gather information or form an opinion on a matter, there may still be gaps in knowledge or unforeseen factors at play.
The phrase is commonly used in discussions, debates, or speculative statements where certainty cannot be established. It conveys a sense of modesty and caution, encouraging the speaker or listener to approach the information with skepticism or an open mind.
For example, if two individuals are discussing the identity of a secret donor, and one person proposes a potential candidate based on circumstantial evidence, the other person might respond by saying, "For all we know, it could be someone entirely different." This indicates that, although the proposed candidate seems plausible, there is no concrete evidence to support or refute that claim.
Overall, "for all one knows" functions as a phrase that acknowledges the limitations of human knowledge and emphasizes the need to consider multiple possibilities when confronted with uncertain information.
