[TomMckenny]

Time in relativity bears almost no resemblance to the common definition of time.

1) There is no such thing as simultaneous. There is no universal now. 2) Time does not proceed at a constant rate 3) Time proceeds at different speeds for different observers.

So time as relativity defines it is certainly true. But time as people conceive it is fundamentally different. At best, common sense time is a profoundly special case that can't imagine the general case. And at worst, a nonsensical concept evolution gave us. Perhaps so erroneous it might be valid to say it does not exist.

[FreeFull]

Humans never travel at significant fractions of the speed of light with regards to other nearby things, so relativistic effects are rather hard to observe in person.

It's the same how Newtonian Mechanics is a really good approximation (and still widely used, too), and because everything around us happens to obey it very closely, it is more intuitive. The difference between what Newton's equations and Einstein's equations predict for most planetary orbits is very slight.

[goldfeld]

If time is a dimension not constraining to fundamental physics, there could be higher dimensions where more fundamental things manifest, as a way to explain it, as does string theory. If there are higher dimensions, what's to say we can't actually experience more fundamental realities through consciousness traveling. If time passes slow by in an emergency or a profoundly concentrated moment, humans if definable as the human consciousness could be traveling at relativistic speeds and not knowing. Elegantly, it's not matter doing that since matter wouldn't survive the trip.