Hello...
A. He found (out) that how helpful it was to the company.
B. He found (out) that how helpful it was to the company affects the whole project.
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In the above, I feel that A is not grammatical unless "that" is omitted, and B is grammatical with "that".
This is only a non-native's assumption.
I wonder what the native's senses are...
pructus In the above, I feel that A is not grammatical unless "that" is omitted, and B is grammatical with "that". Correct. By the way, as I read it, B is an example of "a garden-path sentence" (from the idiom "to lead someone down the garden path" — to mislead or deceive someone).
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pructusIn the above, I feel that A is not grammatical unless "that" is omitted, and B is grammatical with "that".
Correct.
By the way, as I read it, B is an example of "a garden-path sentence" (from the idiom "to lead someone down the garden path" — to mislead or deceive someone).
It sounds completely wrong until you get to "affects". Then