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Is the meaning of 3 different to the meaning of 1? Doesn't 3 correspond to A rather than to B?
A) It seems it is empty, but it isn't empty.
B) It is not as empty as it seems.
Thanks Mr. Micawber,
Actually I wanted to ask whether there was a difference in their meanings in the origianl post but then I don't know why I thought I'd do this in two parts. I guess that wasn't the smartest thing to do!
as 
Linear Mode
