Do you think scientists will eventually create a time machine and prevent major tragedies like the following?

Question

1) September 11, 2001 Terrorist attacks

2) Assassination of President John F. Kennedy

3) Assassination of Robert F. Kennedy

4) Assassination of Dr. Martin Luther King, Jr.

5) Assassination of President Abraham Lincoln

6) The Holocaust

I've heard that there's no law of physics that discourages time travel.

Answer 1

What exactly about the course of human history leads you to believe that such technology would be used to *prevent* atrocities such as these?

Answer 2

The question is would you want them to change these events.  Changing the smallest details could adversely effect the world we are living in today, both for the good or for the bad.

Have you seen Back to the Future I/II/III?  Space time, you want to end up like Marty fighting to save yourself?!

Answer 3

Messing with evens that happened in the past is gonna s***w up the whole time thing and create paradoxes.

Answer 4

Great question.  But you need to remember one of the most fundamental laws of physics.  

Answer 5

No.

No.

No.

No.

s******g with time is never a good idea, because you never know what it could lead to.

Answer 6

If it is possible to build a time machine, it would only be possible to go back to a point in time when the machine existed. So unless we find an old, naturally existing time machine, no, we can't prevent those things.

Answer 7

You do not want to throw off the time/space continuum.

Answer 8

I don't know about physics and laws and stuff, but I've seen enough of society to come to this conclusion; scientists WILL TRY to create a time macine, if not trying even now as we speak in some secret military base. Which brings me to the following; the vast majority of today's technological advances started as military projects. Therefore, be assured that if ever a working time machine is invented, the first to test it will be the military. Now, why do I have the suspicion that it will only be used for sabotage, profit and destruction instead of good causes?

Answer 9

It is physically impossible to travel back in time within your own universe to change the past.  Not only that, but, if in some type of bizarre, physics free event, someone were to travel in time; they had better hope that they cause no lasting effects on the universe.  If they do, something may change enough to give no reason/ability to travel through time, thereby creating a paradox.

If people could have a notable effect on the past via time travel, we would have noted it in our own time.  As we have not, it is safe to assume that all time travelers are only able to ensure that history progresses as it always has.  

As well, it is only possible for time to travel forward on a macro scale.  On a subatomic scale, it is possible to travel in reverse.  This could, theoretically, be applied to a macro scale, however, timing would have to be flawless for every particle, and there is no guarantee that consciousness would come with the matter.

You could travel between universes and effect other ones at will, assuming you buy into the multi-universe theory of quantum mechanics.  But if that's the case, why bother? someone in another universe will do it anyways.

I suppose the real question here i if this means that we are all predestined to a certain fate, after we cannot change it with our own actions...

Answer 10

I think you've heard wrong.

Time travels only in one direction -- forward, except at sub-atomic (quantum) levels.  Laws of physics predicte that in the presence of extreme gravity, time can slow or even stop, but never move backwards, except on the sub-atomic scale.

Now, it doesn't help to move a human back in time, If time can move backwards only for things small than an atom!

It MIGHT be possible to somehow send messages backwards in time using this method, but ONLY if the time you were sending it back to had a machine capable of reading it!  Since that machine has not been invented yet, we'd have to go into the FAR future in order to send a mesage back in time to the NEAR future, but not earlier -- like to now, or to September 10, 2001.

Answer 11

So far no news of a "Time Machine" has been given out by the United States Government. So I don't think any one of those things are unpreventable.  

Answer 12

No.  This is the one thing that will certainly not ever happen.

Answer 13

very greta qustion yes time travel is possible see Einstein said time is like a river can speed up and slow down now if you a tijme travel you problabe change the 2001 attack but you cant change the past because you went to another unuiverse so if you change save the towers you didnt save your towers you save someone else tiime line and another universe i say cuople 2 or 3 hunder years from the proble you need a star or a dark hole to twist space and time in to a prazzle

go ON YOUTUBE.COM TYPE DR.MICHIO KAKU

YES YOU CAN TIME TRAVEL BUT CANT CHANGE THE PAST YOU CHANGE SOMEONE ESLE PAST OR ANOTHER UNIVERSE  

Answer 14

NO IF IT WOULD HAPPENED ALREADY THEN IT THE EVENTS WOULD OF NEVER HAPPENED... SORRY TO BUST YOUR BUBBLE.

Answer 15

even if they did invent a time machine I don't think they could change any past events because if they go back to change an event once the event is changed  then in the future they would have no reason to go back. I know there is some technical term for this but I can't remember it.