Originally Posted by
kingofclutch
In physics, time is described as a dimension much like length, width, and height. When you travel from your house to the grocery store, you’re traveling through a direction in space, making headway in all the spatial dimensions—length, width and height. But you’re also traveling forward in time, the fourth dimension.
Space and time are tangled together in a sort of a four-dimensional fabric called space-time.
When something that has mass—you and I, an object, a planet, or any star—sits in that piece of four-dimensional spandex, it causes it to create a dimple. That dimple is a manifestation of space-time bending to accommodate this mass.
The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity.
Mathematically one can go backwards or forwards in the three spatial dimensions. But time doesn’t share this multi-directional freedom.
In this four-dimensional space-time, you’re only able to move forward in time.
Just for the sake of humor, or how you spell it, humour, explain to me why time travel isn't farfetched. :takethatfoo: