Banned because how long is a day at the end of forever? A day is measured by the Earth's rotation, and even the Earth itself won't exist that long.
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"I got to keep you on your toes. When you think I'll zig, I'll zag. Then when you think I'm gonna zag, I do zag, just to mess you up for the next time, when I might zig" - Lorelai Gilmore