If there is anything in this world about which I know positively nothing, it is …
If there is anything in this world about what I know positively nothing, it is …
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I think there are both awkward and difficult to understand.
Here is my suggestion:
If there is anything I definitely know nothing about, it is…
However, even this sentence probably isn’t quite true because if you know that something exists you already know something about it.
3 Likes
I agree, but I think there’s no other way to make this clear.
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