Human Error
The idea of time being a 4th dimension is a typical human error. I am not going to trash my clock, but have you ever experienced a time other than now?

No No No
Energy (motion) is not waiting for a next time-frame before continuing; reality is not like a movie. There is no huge pile of past laying around somewhere and there are no endless piles of future either (Where!?). Now is not an endlessly short frozen moment inbetween the future and the past, the opposite is true; now is for ever.

Human mind
In the human mind "history" is a product of memory, and "future" is a prediction with is based on history. Time is a property of the mind, it's no 4th dimension. It is a must for a human to remember and predict, but it is very healthy to focus on now most of the time.
Humans see/know near to nothing (the more you know, the more you know what you don't know), that is why we need the idea of time; to keep track of the few shapes we recognise. "shapes that we remember" = the past, "shapes that we expect" = the future. An uncertain future means that you don't know what to except, it does not mean that energy has "forgotten" its logic.
Every human has her/his own dynamic image of history & future.

Dynamic Shapes
All shapes (combinations of fundamental elements) that contain energy are dynamic because of the energy in them. Even things that seem to stand still, move constantly (Atoms are a lot of energy moving in a small circular system). Now is always in motion, changing shapes. If all energy could freeze, nothing at all would happen. Everything that contains energy, acts like energy. Causality; action-reaction, cause and effect. No difference between aerodynamics and psychology; both motions are based on energy (Unless there is something else other than energy that moves too).

Time experiences
Atomic time is about how often atomic radiation vibrates. But the feeling of how fast time "flies" is depending upon what you experience. Waiting for one hour can take a lot of time, but time flies fast when doing something nice. I remember one special year that still feels as long as its previous three years.
"It's as if time stood still here" people say when shapes did not changed much, or "that men was far beyond his time" if he was busy with shapes that became common many years later.
Do you too have the feeling that, as you grow older, time goes faster? I do. So, how old am I? I feel like 28 (mentally), the calendar tells me I'm 35, but if I may become 70, 80 or so % of how I experience my time may be past.

Reversing time
24 hours in one day.. ok, but shall we reverse it? One day I'll die, I can't predict when, but I know that every second that passes is one less to live. Today started at 00:00, now it's... 15:52, and this day will end at 23:59 + 60 seconds. This is common but weird acually. More logically would be to start at 24:00, and to count down towards 00:00. We don't get minutes, we lose minutes, so do something nice before this day ends!

All is here
All ingredients of "past" and "future" exist inside now, hidden if you can't see them. If you make a vase from clay... that clay did not come from the future, and if you break that vase, that clay does not move into the past. The what we call vase shape is gone yes, but not seeing what it became does not mean it is gone.

All photos
A full color digital photo of 400x600 pixels is a combination of 5760000 bits. If you'd gamble a combination, you can get a photo now that will be taken ten years from now, or a photo that has not been taken 1000 years ago!
There are exactly 2^5760000 possible combinations, no more no less, with is an huge amount, but not endless. Most of these combinations are "noise" - not recognizable as photos.
"A photo tells more than a thousand words" could be so because 1000 words are only about 48000 bits. If you'd create a text from the future, you'd probable not understand it, because future text contains new words, and some old words get a new meaning.

One Second
The distance light travels through standard vacuum space in one second is about 299,792,458 meters. The amount of change happening somewhere can be compared to that. If two solid objects with relative constant velocities move 1 meter closer towards each other while a light ray traveled 299,792,458 meters, than the difference of velocity between these two solid objects is 1 m/s (1 meter per second). If it becomes more than 1 m/s, than there is a larger energy difference.
But, If the condition of space is changes; so does the speed of light/energy/motion, thus how long one second lasts is not constant.
The International System of Units (SI, 1967) defines one second of atomic time as: "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom."

Time Travel
There is only now, thus there is no time to travel. But if you'd go to an area where the condition of space is causing energy to slow down or speed up (compared to where you came from) than it feels just like traveling in time when returning in the area that has changed more or less. That would be a cool illusion!

Possibilities
Weird and cool is that all things that were or will be possible, are possible now, you don't have to wait for the future! (possible, I did not say "easy to realize")


That's it for now, don't want to spend more... energy on it now!