Is It Possible To Time Travel ?

These few pages are the results of careful reading and researches starting from the original John Titor posts still available on the Internet.It is very easy to consider Titor story an hoax, as most of his prophecies about the future are now long overdue.

One single universe existed before the Big Bang.This single quantum state universe was fully isotropic in its constitution, and it was point like shaped.Had it existed, for argument sake, a pair of two distinguishable points within it, it would not have been totally isotropic.
After it exploded into a proper universe, an unlimited multiverse matrix was generated.This starting event is called Big Bang. Actually, every single possible quantum state universe is happening within a broad multiverse matrix. On universe world lines, time normally flows from past to future.

Different choices allow people on Earth to move between different worldlines, always in accordance with the “past to future” standard rule. Time loop travels or shortcuts from present to past or from present to future can also be attained within special conditions.

HOW A TIME MACHINE WORKS
Manipulation of time, or time travel between world lines can be achieved by manipulating spin and mass of micro singularities, point like black holes whose mass is in the range of just few tens of Kilos.
The traveler and the cockpit with the time machine and micro singularities are displaced along together during the time trip.
This conveniently allows the traveler to reuse that same machine when he needs to go back to his original starting time and world.
When time traveling, say from A0 (here and now), to the past B, nobody can ever end into exactly his past of origin B0 (the past as it could possibly be recalled from somebody in A0), but eventually to one pretty close, similar, almost indistinguishable from it, called past B1, depending on the accuracy of the time traveling device.
If the divergence is too high, the traveler will reach past BN, which is the denomination of a far away world-line, where the world does not look similar at all to what could be recalled from A0.

THE ART OF WORLDLINE EXPLORATION
After the testing of timetravel devices reached the safety criteria to host human survival into the cockpit, some missions were proposed to gather information and items from near past.
The first "human safe" machine developed was the C202 (clock type Caesium, 20 gravitometers, 2 main clocks).It only had a break away time of only +/- 15 YRS, so the missions accomplish-able were very limited "in time". The technology yet was progressing and promising, and the TORAH Foundation started to propose and study feasibility for missions not just limited to physic experiments, but to achieve practical solutions into a post nuclear world.
The first group of time travelers were 5 scientist, they repeatedly used the C202 unit to map WWIII events from 2013 and 2016.

These pioneers used the C202 unit to only map historical events of the near past and future, and to check for consistencies or divergences from the original worldline A0.
Huge amount of data was collected by these forerunners, breaking new grounds in physic and technology.
Most of all, these machines resulted very useful to recover tools and items lost after the war, and they are still of much use in this sense nowadays.
All books about timetravel are still using the original nomenclature to map worldlines:A0 is for here (this worldline, 0) and now (this day, this hour, A), where the mission control exists and where the time trip begins.
B0 is the past (or C0 the future), as it can possibly (or will possibly) be recalled from an observer (mission control) in A0.This target point B0 (or C0) can never be theoretically or practically reached in a time travel trip without sweeping away most of know physic.

B1 is the actual "drop off" worldline reached by the traveller in the past (or C1 when in the future).
B0 and B1 are ideally very similar (close), in order for the traveller to operate in a consistent and familiar worldline environment.BN (or CN when in the future) is a very divergent worldline. It is too distant and different from B0 to allow for a traveler to orienter and accomplish any mission.
When using a time machine as a ship for space exploration purposes, the trip vector is no more described by just two characters such as A0.A third parameter (location) is added.
A space trip usually looks like "from A0 (EARTH) to C1(MOON)". This means that a ship displaces itself from here and now on the Earth and reappears in a close, consistent future C1, but on the Moon surface.

The C204 unit was the second a time displacement machine developed soon after the C202 experiments.
It is broadly used as a time, (not space) machine, and allows trips up to +/- 60 years (break away time).
This parameter is very important. After this time distance, the traveler is likely to drop off into a worldline BN (or CN), too different to live and move into. A prototype C206 and C406 time displacement unit, with active time compensation, has a theoretical break away time of 193 YRS but it hasn't been fully tested and approved as human safe yet.

MISSIONS TO PAST AND TO FUTURE
A typical trip to the past consists of the following phases (see image 2):

1) The traveler chooses a safe place to start the trip, it has to be a place gravitationally stable such as caves or abandoned mines, places where the gravitational background was not influenced by human activities in recent past (construction sites for buildings or dams influence a lot the gravitational background of an area when compared to the accuracy of the VGL).

2) When the place and time are set (A0), the time machine can start the trip in VGL track.The VGL (Variable Gravity Lock), takes a snapshot of the gravitational environment around the machine when the trip starts, and it conditions the microsingularities, so that the time machine and the traveler are always on the same "spot of Earth".
Without the VGL tracking for the Earth all the time, the machine along with the traveler will be soon displaced in the middle of empty space, as the Earth and the Sun rotate away from the traveler, which would be standing still on that same spot of universe. The accuracy of the VGL depends on the accuracy and quantity of the caesium clocks and gravitometers monitoring the environment around the machine.
A quantic computer monitors the data from the instruments and continuously recalculate and redirect the direction and spinning of the singularities through the electron injection manifold. The time speed is another interesting parameter, the C204 unit at max power runs at 10 years/hour (10 years outer space displacement every hour experienced inside the time machine).
A great deal of X and Gamma rays are also generated and must be vented away from the cockpit. The traveler eventually experiences a 2 G force pushing him on the seat when travelling at full speed (10 YR/HR on a C204). The secondary microsingularity is used to stabilize gravity inside the cockpit, and also to deflect the X rays generated by the primary microsingularity.

3) When the arrival time is reached in the past (or in the future), the machine stops the spinning of the microsingularities. The traveler along with the time machine is "dropped off" into the arrival worldline B1.

4) The traveler lives and interacts into the arrival worldline B1, and as a consequence the worldline starts to diverge into something different, B2. The history of the drop off worldline B1 as been changed forever into a new B2 path, just because a newcomer time guest has dropped in and is changing things around.

5) When the mission into B1-B2 is accomplished, the traveler will have to revert back to his origin (A0) where mission control is awaiting for him to come back.He will first have to travel back in time to his arrival point, from B2 back to B1. Again, he will necessarily miss that exact spot B1 as the induced divergence will drop him off into B3 instead.
The divergence between B1 and B3 is usually very low, since a mission (from B1 to B2) usually last weeks or days, whilst the break time of the machine is in the range of decades.

6) From B3, the traveller can finally go back to A0 by simply backtracking the travel parameters recorded during the original trip from A0 to B1. The VGL does not need to track the presence of the Earth during this last trip, it will just happens, if the trip A0-B1 was right in the first place, that the Earth will be exactly where it is supposed to be, at the drop off point A3.
When backtrack to A0 ends, the traveler will appear into worldline A3, consistent to the origin A0 as much as B1 was consistent to B3. If there is the suspect that the divergence between A3 and A0 is not negligible, the traveller can stall the time machine to chase a better VGL match (lower divergence), before dropping off into A3.A time machine is stalling when its time displacement is equal to zero, which means that it continuously drop back one time cycle and then drop forward the next, so to keep the traveller outside any particular worldline as long as it is requested, without any time relative displacement.
From an operator awaiting the time traveler in mission control A0, it will look like the time machine disappeared and then reappeared into the same spot after a split second.The traveler inside the time machine will have aged for all the period of the mission time, usually weeks or days from B1 to B2, plus the travel period (usually no more than a few hours).

The total mission time has been from A0 to B1 (back to past in VGL track)), then from B1 to B2 (normal flow of time required for the mission), then back in time again from B2 to B3 (back to past in VGL track), then from B3 to A3 (in back track mode of a recorded spacetime path), and eventually from A3 to A1 (stall mode, if required). Some beginners may be tempted to move direct to A1 by simply moving forward from B2 up to A2 (VGL shall then be turned on, to chase for the Earth during the fast forward trip).
Unfortunately, this will not bring the traveler back to A1, and probably not even close to that (A3), but will move the traveler forward to AN, the future of B2. AN will have a considerable divergence from A0 which is the sum of the divergences between A0 to B1 (time machine accuracy dependent), plus the divergence from B2 to AN (time machine accuracy dependent), plus the induced divergence factor B1-B2.

This last parameter is the most unpredictable of the lot, it increase the longer the traveler lives into B1, and the more interactions he has during his staying. It is worth to clarify that when time traveling it is only important the starting point A0, and the final arrival point A1, no matter how you move between them. Usually, the probability of reaching A1 by fast forwarding B2 is not null, but typically very low, and it is thus far better (although more "time" consuming) to move backward, one step at a time, from B2 to B3 and finally into A1.

DIVERGENCE BETWEEN WORLDINE FOR DUMMIES

So far, the divergence between worldlines is simply measured by the VGL as the gravitational divergence between departure (A0) and arrival (B1). A traveller could then stall the machine at the arrival A3 and let the VGL scroll through worldlines to decrease the gravitational divergence and ideally have a perfect match with A0.
However, divergence between worldlines is not just a matter of gravitational similarity, but it is an intrinsic, constant parameter that forcefully occurs every single time the traveler is displaced by gravitational fields, and a traveler usually displaces billions of times before reaching the final drop off destination. Stalling the machine for too long will decrease the VGL divergence, but increase the number of displacement cycles, so overall worldline divergences in terms of social and historical discrepancies shall increase.

WHO TRAVELS AND WHO STAYS HOME
It was proved with the experience, that a good timetraveler is rarely a good scientist.During a mission the main qualities are adaptability, social and interpersonal skills and improvisation. Every cadet needs to withstand a series of training trips with his tutor.These procedures are made to let timetravelers familiarize into different social periods and contexts, and they are also taught the basics to approach and meet timeparents and timefriends, having resulted impractical to make travelers wander on different worldlines without relying on any support from friends or parents.
Also a standard practice is to send travellers with fake names and generalities, especially when information is seeded as secondary mission parameter. The standardization of traveler names is not just a curiosity but is also a useful signature tool for historical seekability of travellers and secondary parameters  checked by mission control.
After every mission, the traveler is entitled a period of pause into the home worldline to prepare for the next mission and recover from the time jet lag. It is not good for a traveler to see too many places and times too often, as this may cause severe alienation and psychological side effects due to the ever changing places and histories he lives into.
Travelers must always withstand special psychological and ethic training. Rarely a traveler fit for the future is also skilled for missions to the past and vice-versa.

LOOPING INFORMATION FROM PAST TO FUTURE
Another interesting secondary mission parameter is the information looping or also "seeding" of information or artifacts into a mission worldline. There are two main techniques (please see image 3):

The first type consists of the physical burial of an artefact in a named area, to be recovered from mission control in the future (see worldline B1-B21 that develops into AN-1 very close to A0).
A second technique consists of a timetraveler to reveal himself in public, or to drop future history books into the past. It is important for the traveler to have as much impact as possible in order to change future events into the worldline he is acting, so that it shall drammatically diverge (B1to B22 to AN-2).
In this case, the divergence of the worldline will be so high that mission control A0 will stand no chance to historically track the traveler into the past worldline. The consequences of divergences induced into a worldline, will only be observable to the time traveler himself, in the case he decides to move to the future of B22, namely AN-2, to take a look to the consequences of his actions.

PATENT SYSTEM DOES NOT WORK IN AN OPEN TIME SOCIETY

Another type of trip is going to the future (see image 4). This kind of missions is mainly used to gather information about future events and technology breakthrough.
Despise this technique may appear very promising in terms of research and development, it proves not as convenient as it appears. First point of concern is the tool lack. Even if you have the theoretical knowledge on how to do technology, you may still miss the basic tools to practically develop the technology itself, and these tools may still require decades to be developed and built.
For instance, theoretic physics had knowledge of time machines was known since the year 2000, however, these will not be built until conditioned, naked singularities are created and magnetically bottled for use.
The development of "tools" (such as the LHC) will still require decades. On the other side, the possibility of "importing" technology or tools from the future is still considered ethically unsound and dangerous. What if Hitler had had the hint about the N bomb at the beginning of WWII? What would we do if we where to smuggle too advanced (or too dangerous) technology, without any time to think about its implications and effects? History and nature have taught that evolution is very conservative, and leaps to unknown fast forward tend to be doomed with failure.

THE VGL DEVICE
When time travel was invented prototypes were built to go back in time for a split second and then return.
They had sensors and cameras on them, and most important thing... They never returned home! It was later discovered that the machines were ending up about 15 miles away and 3000 feet in the air.
Unfortunately, the Earth and Solar System could not help themselves from rotating away during that split second... This was a mayor problem that was later resolved by the invention of the VGL (Virtual Gravity Lock).

When traveling to other worldlines a system of gravity sensors in the cockpit machine takes a snapshot of the starting point gravitational environment. This parameter is constantly monitored during the time trip, so that the traveler moves constantly between worldliness with a consistent gravitationa“ lenvironment” before dropping out to the arrival destination (image 5).
The injection manifold does most of the hard job by conditioning the axis orientation of the microsingularities, and thus keeps chasing the Earth surface as it tries to rotate away.
The travel parameter and axis orientation are constantly recalculated and recorded for future reuse or when backtracking to home A0. If a cement block was to appear into exactly the spot where the traveler is supposed to be, the reading of the gravitational environment would diverge too much, and the injection manifold would invert the trip back using the “flight data” stored so far.
The time machine would “backtrack” the traveler to the latest point of congruity with the original gravity snapshot. A great deal of time and effort goes into picking just the right spot since you cannot physically move during a time displacement. You must make sure a dam or a skyscraper will not be built (or was not built) around, because this will “pollute” the gravitational arrival point background from the expected one sampled at the beginning of the trip.
The VGL is thus very useful to keep the feet on the Earth when timetraveling, however, this alone will not be enough when the time travel stretches to destinations more than a couple of hour distant in time. Unfortunately, as the time travel length stretched more and more, the prototypes correctly re appeared back on the right spot, only to instantaneously crush on the ground or fly up in the air at pretty dangerous energies.

This problem is caused by gravitational tidal force at the arrival drop off point. VGL only seeks to minimize the divergence of the Earth gravity, but cannot do anything to compensate the relevant gravitational divergence induced by the movement of the rest of the planets on the Solar System.Even if the time machine drops out on the right spot of Earth, it would be immediately hit by a sudden gravitational force due to the divergence of positions of the other planets around (see image 6).
The tidal wave only last a second, when dropping off, but this will be enough to slam the machine into pieces. In the best conditions, it will push the machine down on the ground. At worse, it will push the machine up in the air. In between the two, any possible slam direction will statistically occur and cause great damage to the machine and to the mission control laboratory A0.
This issue limits the arrival and departure dates that can be chosen when travelling on time. Not only the VGL must seek for the Earth, but the arrival point must be “astrologically” consistent to the starting point, in order to minimize gravitational tidal waves at the arrival.
Correct time windows for departure and arrival shall be chosen carefully, prior to each time travel mission.For instance, a 28 day trip to future may result into consistent arrival position of moon and sun (considering negligible the influence of other planet movements). A 28,5 day will result in an inconsistent planet position layout (Sun and Moon gravity is completely opposite at the arrival) , and thus a very different gravity layout will attend the traveler when dropping off.

TRYING EVERY POSSIBLE SOLUTION BEFORE MAKING A CHOICE.
As already discussed, time and space are moving around the timemachine all the time during the trip, and the VGL must keep track of a small spot of Earth into a huge possibility of universes, times and worldlines, swiftly moving all around.
A quantic CPU is the only way to keep track of the Earth position into these harsh conditions, as it can find the exact spacetime path for Earth by browsing every possible one at the same time, in a single calculation step.