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A medium tells his employer about the woman he was with.

I scanned her. she doesn't have
your artifact. I know that much. Meaning he knows only that?
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Hi,
Yes, that seems to be the meaning in the given context.
But in another context, it might mean something different.

Clive
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Could be. Sometimes we use it to mean I know at least that much. Could be either one, in this case - without further context.

- A.
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