It means that all attention is focused on the speaker, so the speaker is the center of attention
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October 14, 2017
0
Answered
It's better to say:
"How long has it been since you slept?"
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October 14, 2017
0
Answered
Both options are grammatically correct, it's the context that slightly changes.
1) "an advanced civilization's video game" - just a generalization, any non-specific civilization
2) "some advanced civilization's video game" - maybe some particular civilization has already created this video game, but you don't know which one exactly
