A Parents' Guide to Time Machines

(Lunarbaboon)

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.