But what if you could time travel without all the drama? What if all you wanted was to hop ahead a few years or take a quick trip to the past for some fun?
That's where things get more complicated. Philosophers and scientists have been grappling with the implications of time travel for centuries, and there's still no consensus about whether it's even possible.
Some argue that time travel is logically impossible because it would create paradoxes: If you traveled back in time and killed your own grandfather, how would you be born to go back in time and kill him? But others say that such paradoxes can be resolved through something called "the grandfather paradox." This theory suggests that traveling back in time wouldn't actually change anything because the traveler would simply exist in a parallel timeline where those events already happened.
There are also questions about causality: If you went back in time and changed something, what would happen to the present as we know it? And could you really just zip around through different points on the timeline without creating chaos? Some scientists believe that our understanding of physics doesn't allow for actualtime travel – but they admit that they don't know everything about quantum mechanics, so who knows?"