Question

what is the concept of time machine?

own word answer
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Answer 1

Explanation:

Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine

Answer 2

Time machine

well, that's an amazing concept about travelling in the past and future

but the problem is time is linear

and many paradoxes separate the past from the future And the present!!

and moreover we don't know the nature of time

so it's not possible for us to travel in time

but it might be possible in the future

Fun Fact : It's easier to travel in the future than to travel in the past !!