You could travel into the past and see great events from history. Or you could peer into the far future, which is either a technological wonderland or a nightmarish dystopia.
But, to be practical, you're more likely to use the time machine as a free babysitter that is available whenever you need it.
There's one complication: although you'll be ready for bed at 10 PM, your child will think that it's just 7 o'clock.
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