A better definition would be that we PERCEIVE time to be as a linear succession of events in OUR UNIVERSE. Because the arrow of time is caused by entropy the second law of thermodynamics. Which says that in an isolated system, entropy tends to increase with time. That's exactly what's been happening since the big bang.
I'm a big supporter of Albert's Einstein theory of relativity because all evidence we come up with to this day proves he was right. Time is four dimensional space (=spacetime).
We can only see things in 3d but there are more dimensions. Our multiverse can have up to 11 dimensions. What we call time is the 4th dimension.
Can you manipulate time?
There are 2 types of time travelling, travel to the future and travel to the past.
Travel to the future has actually been done a long time ago, Einstein showed us how. The first time traveller ever was "Sergei Avdeyev" a Russian cosmonaut.
What happened is he spend 747 days aboard Mir, cumulative across three missions, he went approximately 27,360 km/h and thus aged roughly 0.02 seconds (20 milliseconds) less than an Earthbound person would have. That's because of the effect of time dilation.
"According to the theory of relativity, time dilation is a difference in the elapsed time measured by two observers, either due to a velocity difference relative to each other, or by being differently situated relative to a gravitational field. As a result of the nature of spacetime, a clock that is moving relative to an observer will be measured to tick slower than a clock that is at rest in the observer's own frame of reference. A clock that is under the influence of a stronger gravitational field than an observer's will also be measured to tick slower than the observer's own clock."
The problem with travelling to the future is that you need to fly as fast as possible. Ideally as fast as the speed of light but we just don't have rockets that are capable of doing such thing.
Travelling to the past is much more difficult. We don't even know if it's really possible. You would need a wormhole to travel to the past. Wormholes are a bridge between one location in space to another.
A linear success of events MAY TAKE PLACE ON A TIMELINE.
Yet time shall continue to progress independently of the events taking place within the framework of measurement time provides.
From what I've been reading, time could well be one thing (yet to be completely defined), while our perception of time—how it progresses, relativity, etc.—could be a whole different matter.
I think there's really no doubt that our perception of time is linear. We don't jump around in a timeline between our past, present and future living events that took place in a non-chronological order. Yet, it's quite possible that time has properties that might allow for such things if we knew how to access it, or rather, step outside of it.
What we are capable of perceiving and what actually may exist has been a question that has been thought over throughout the ages, and only become more complicated as we get better at measuring what is going on around us. So, time, along with all kinds of unexplained phenomena, could have all kinds of characteristics that we're just not able to realize because of some limitation we have as mortal beings.
Yeah.. I strongly agree with this definition and this is the widely used definition in the world of science (physics).
It is believed that time is that which event are being referenced to before or after. Time has a lot to do with event and I strongly agree with your point which states that "as three-dimensional beings, our external senses are limited, we can through the memory explore the past, and with the attentiveness to search the present but the future is presented as something a little dark".
Thanks for reading and I hope this helps.
Yep. Time is linear and only one direction. Time cant be bent or reversed.
Stories about turning back the hands of time sounds cool if its a love story but for other genre, i dont like the idea.