1. The food would have to be amazingly delicious, so as to never be forgotten by his friends.
2. The food would have to be amazingly delicious so as to never be forgotten by his friends.
If the comma before "so" is left out from #1, is #1's meaning different from #2?
I'd say without a comma, the first sentence makes no sense.
It is a hair-splitting question. To me, (2) conveys a stronger suggestion that being amazingly delicious is the only way to ensure that it would not be forgotten.
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It is a hair-splitting question. To me, (2) conveys a stronger suggestion that being amazingly delicious is the only way to ensure that it would not be forgotten.
I see the matter differently. The sense is off. It seems to be saying that his friends normally quickly forget food, and therefore it would have to be exceptionally tasty to overcome this memory deficit they suffer from. I suspect you were going for something more like "The food would have to be amazingly delicious, such that it would never be forgotten by his friends." That comma is necessary