Not having a thing is not the same as having an empty maybe-thing
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That seems like a rather imprecise phrasing. Let's make it more concrete: write a pure function which produces your phone number given a driver's license. What does it return?
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In the real world we can trivially ask and answer the question - Does your driver's license have a phone number on it? Also the question - what information does your driver's license have on it?
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But is that because you didn't provide a phone number or does no one expect to see a phone number on your driver's license in the first place?
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How can I know what people might expect?
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Aren’t you saying that until you actually inspected your license though that it might have a number on it? You’re hedging your bet and acknowledging the uncertainty of its presence. I thought that was the important thing.
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