You keep saying that if my interpretation were right, the description would be more complicated. In a perfect world you might be correct about that, but the designers are only human. They don't necessarily consider all implications of every bit of text before they write it down; they may not have realized that this bit was vague.
I think that if your interpretation were right, the description wouldn't state that the target must be "known" to the archer, because that would be irrelevant and redundant. However, that's not proof. It's easy to second-guess the actual words based on what the designers "should have" or "would have" said, but that's entirely subjective, and can be used equally well on all sides of an argument.
I think that if your interpretation were right, the description wouldn't state that the target must be "known" to the archer, because that would be irrelevant and redundant. However, that's not proof. It's easy to second-guess the actual words based on what the designers "should have" or "would have" said, but that's entirely subjective, and can be used equally well on all sides of an argument.