AVAILABLE SOON..................
THE EVERYTHING'S GUIDE TO THE END OF THE UNIVERSE
by: Rodney Kawecki
SAID TO BE THE ONLY CLOCK OF ITS KIND - STILL TODAY. IN 1906 IT WAS THOUGHT TO BE THE ONLY MEANS TIME TRAVEL WAS POSSIBLE. TODAY THIS IMAGINARY CLOCK IS WORTH BILLIONS OF DOLLARS ON THE CLOCK MARKET.
Rodney Kawecki was born in the United
States ventured into the studies of advance physics for the shear
purpose to study physics with an open mind. Reading from “The Special Theory of Relativity” Einstein
translates for his advance physics doctrine an imaginary space ship of light
from which he states ” I wonder what it would be like if I could ride on
top of a beam of light " to explain his ideas. His doctori opened physics
into the field of science fiction. The idea now according to Rod Kawecki is to
try and re-define the barriers he published as a serious study for modern
physics from science fiction back again into a serious fiction literature.
What modern physics refuses to include in
the known theories is how imitate of an expanding universe might include a
future end for it. In all likelihood subjects look at modern physics from the
point and view of a big bang event that started the universe in the first three
minutes studying deploys and likelihood of any end. In 1998 a seven point four earthquake erupted
southern California showing over thirty thousand people driving away from it
never to return. It showed on the media news people driving over the
Bakersfield north bound freeway pass cars bundled traveling out of Los Angeles.
There were also those whom never saw the news casting broadcast so never
decided on their own or amongst themselves during the crisis whether leaving
California might be a good option so most never left the city.
The study of modern physics is to be
conscious and well rehearsed about what your studying addressing the
fundamental ideas of the subject. The future of planetary studying also
includes the future reference frame of its technology and its affects pointing
or predictions in the future. As a
species and with the new technologies available today it is not just making
predictions about what might or might not happen in earths future cosmogony it
also should include to which lengths the predictions are heading that we should
inquire what might be prepared. It is Rod Kawecki’s belief when the media
changes in earth’s future technology and information at the cosmogony level
will heighten to a scale which traffic jams traveling to colony’s across the
solar system might be a great invitation for its future. In any study in any event of the present technology
over time having decay it might be important to prepare a means to escape. It
might just change the whole world – as we know it. Scientist believe that we have reached the
half-life mark of the universe’s end I think its important the direction life
is taking us that a super planetary power is recognized.
Using this imaginary ship made of light
Einstein tries to explain how all mass deities are physically related to energy
as a form of communication and light quanta’ vibrations and packet waves that
can be used to send messages across great distances through an empty
equilibrium space field element or even as a clouded gravity energy field or
even to the moon for that matter – he proposes that LIGHT and the speed of the
message stays the same it doesn’t change conserved by its own quantity and
nature - reality or mass on the other hand well - isn’t conformed to these same
rules or speed limit because it doesn’t travel due to any pre-set velocity.
What are we talking about when we speak
about modern physics? It is the study and mathematical deciphering the
mechanics the universe as we call it works. The way it theoretically originated
and possibility the manner to which it might end. What modern physics leaves out from the
equation about the universe is its finale end. In this book I try and bring all
these questions about our universe to a head you might say how it began and the
future and manner through our journey of the cosmos.
Not known in other literature our universe
extends as a circle with an inflating flow of pressure. What this pressure
exist of or its origin is still unknown to the scientific community. Some call it dark energy but in any case this
bubble as some call it – extends outwards filled with some liquid type element
of some sort. Most scientists believe after Erwin Hubble discovered that the
universe was physically expanding all matter or life in the cosmos exist inside
this round dome shape balloon. According to Albert Einstein in 1905 it was his
analogy that all planetary matter which includes galactic islands exist
orbiting on a flatland surface. Its hard to calculate that if matter resides
inside this bubble sphere that its surface lays on the inside of it. In such a
definition all planetary matter resides orbiting upside down as it clings to
the surfaced flatland from the inside.
In 2015 Rodney Kawecki went further into
the research about the Hubble Bubble Theory and decided that all planetary matter
galactic origin since everything of debris is made in galactic realms that if
the universe resides settled on the surface of this so called bubble surface we
must reside on its outer surface not its inside curvature. In any degree String
illustrates space curvature in ways that space curvature is as well curved in a
manner simultaneous to its outer surface. In this manner of origin of the
universe and core surface observed by the outside surface the bubble itself is
filled with some alien element yet to be detected. But when we concentrate on
the factual basis that we are confronted with an inflationary fill of an
expanding bubble comoving and pushing galaxies scattering them apart from each
other at speeds faster than light we have to observe the comoving activity at
the final balloon surface edge of the fabric.
Since the galaxies lay outside the bubble surface alignment in a shaped
axis or curvature of the flatland surface edge as a whole we observe galaxies
scattered by extreme momentum as the bubble inflates is what makes the galaxies
spread apart on its curved surface. As
the bubble continues to inflate it is not the matter that is being attracted
towards the balloon surface but the inflation of the bubble that holds the
galaxies in a curved position of its shaped axis or shaped curved surface edge
matter sinks into the bubble outside space curvature because of the dense
pushing force of the inflating bubble.
We look at all this new information about
our expanding universe expanding planetary and galactic matter spheres and
debris it is all expanding at a specific rate of velocity. Towards the center of the bubble’s mass more
deeper inside it the dense area seeable three dimensional mass resides the most
dense space area mass where outwards to the bubbles fabric end where the
galaxies lay outside its origin it is the filling bubble energy debris is what
holds the universe final future hours. What will happen to universe debris
after the bubble ceases to inflate, stretch into a ripping of the fabric,
explode, implode or shrink are the universe’s final questionnaire of what it
might shape into if such events would to occur.
Professor Rodney Kawecki’s unique views in
this book and others published by him could result and change the way physicists
imagine the origin of the universe in the future.
CHAPTER
SEVEN
The Theories about time and time travel thought relevant
Backwards, forwards and traveling with a
stuck clock second hand – is any of this possible? Has anyone from some other
foreign star ever visited our planet earth?
The Alien Species black, white, brown, yellowish, tan and red are all
part of a spectrum but does that make it all true? Einstein’s cosmological inside the bubble
theory verse Rodney Kawecki’s outside the bubble theory matter creates pushes
against the fabric upside down. On the other hand, Kawecki’s Bubble they are
physically laid with no real force therefore the universe is at rest.
Time
travel is the concept of moving between different points in a timely manner
analogous to moving between different points in space.
Time
travel could hypothetically involves moving backward in time to a moment
earlier than the starting point, or forward to the future of that point without
the need for the traveler to experience the intervening period (at least not at
the normal rate). Any technological device – whether fictional, hypothetical or
actual – that would be used to achieve time travel is commonly known as a time
machine.
Space-time is a structural model of the
universe that follows Einstein's theories of special and general relativity.
Though modern physics tells us that there could be as many as 10 or 11
different dimensions, under normal circumstances, humans are able to observe
four dimensions. We experience three dimensions (height, width and depth)
actively, meaning we can navigate them, and one dimension (time) passively,
meaning we can detect and observe it, but we can't control how we move through
it.
There are essentially two types of proposed
time travel that one could imagine. The first is to reverse course so that the
time traveler may re-experience time that has already happened. The second is
to slow the time traveler's relative experience of time, essentially allowing
him or her to travel into the future. According to what we know about special
relativity, progressive time travel is a much more feasible possibility than
the regressive time travel. Special relativity tells us that your experience of
time slows down as your velocity approaches the speed of light. Given this
knowledge, all that it would really take to carry an astronaut to the future is
an extremely fast space vehicle.
Light does not prorogate time. It doesn’t
change the illusion it only radiates its presence. Light on light off and
you’re on your way – so Einstein would say. But I think it takes a lot more
than duplicating a light mass and velocity to change time and that’s what you
have to do – change time itself. Is that possible? Light seems only to be the
hindsight of the attraction at both ends of a journey through the fourth dimension
– if a fourth dimension actually exist at all.
Forward time travel
There is no widespread agreement as to
which written work should be recognized as the latest example of a time travel
story, since a number of early works feature elements ambiguously suggestive of
time travel. Ancient folk tales and myths sometimes involved something akin to
travelling forward in time; for example, in Hindu mythology, the Mahabharata
mentions the story of the King Raivata Kakudmi,
travels to heaven to meet the creator Brahma and is shocked to learn
that many ages have passed when he returns to Earth.
The Buddhist Pali Canons also mention time
moving at different pace, in the Payasi Sutta, one of Buddha's chief disciples
Kumara Kassapa explains to the skeptic Payasi that "In the Heaven of the
Thirty Three Devas, time passes at a different pace, and people live much
longer. In the period of our century, one hundred years, only a single day,
twenty four hours would have passed for them".
In Islam there is some reference of time
travel. The Quran tells about several individuals who go to sleep in a cave
only to wake up after 309 years. There is also a reference about time variation
where it states "one day for God (Allah) is one thousand years of what you
(human beings) count".
Another one of the earliest known stories
to involve traveling forward in time to a distant future was the Japanese tale
of "Urashima Taro", first described in the Nihongi (720). It was
about a young fisherman named Urashima Taro who visits an undersea palace and
stays there for three days. After returning home to his village, he finds
himself 300 years in the future, when he is long forgotten, his house in ruins,
and his family long dead. Another very old example of this type of story can be
found in the Talmud with the story of Honi HaM'agel who went to sleep for 70
years and woke up to a world where his grandchildren were grandparents and
where all his friends and family were dead.
Statue of Rip Van Winkle in Irvington, New
York
More recently, Washington Irving's 1819
story "Rip Van Winkle" tells of a man named Rip Van Winkle who takes
a nap on a mountain and wakes up 20 years in the future, when he has been
forgotten, his wife dead, and his daughter grown up. Sleep was also used for
time travel in Faddey Bulgarin's story "Pravdopodobnie Nebylitsi" in
which the protagonist wakes up in the 29th century.
A more recent story involving travel to
the future is Louis-Sébastien Mercier's L'An 2440, rêve s'il en fût jamais
("The Year 2440: A Dream If Ever There Were One"), a utopian novel in
which the main character is transported to the year 2440. An extremely popular
work (it went through 25 editions after its first appearance in 1771), it
describes the adventures of an unnamed man who, after engaging in a heated
discussion with a philosopher friend about the injustices of Paris, falls
asleep and finds himself in a Paris of the future. Robert Darnton writes that
"despite its self-proclaimed character of fantasy...L'An 2440 demanded to
be read as a serious guidebook to the future."
Backward time travel
Backwards time travel seems to be a more
modern idea, but its origin is also somewhat ambiguous. One early story with
hints of backwards time travel is Memoirs of the Twentieth Century (1733) by
Samuel Madden, which is mainly a series of letters from British ambassadors in
various countries to the British Lord High Treasurer, along with a few replies
from the British Foreign Office, all purportedly written in 1997 and 1998 and
describing the conditions of that era. However, the framing story is that these
letters were actual documents given to the narrator by his guardian angel one
night in 1728; for this reason, Paul Alkon suggests in his book Origins of
Futuristic Fiction that "the first time-traveler in English literature is
a guardian angel who returns with state documents from 1998 to the year
1728", although the book does not explicitly show how the angel obtained
these documents. Alkon later qualifies this by writing, "It would be
stretching our generosity to praise Madden for being the first to show a
traveler arriving from the future", but also says that Madden
"deserves recognition as the first to toy with the rich idea of
time-travel in the form of an artifact sent backwards from the future to be
discovered in the present."
Mr. and Mrs. Fezziwig dance in a vision the
Ghost of Christmas Past shows Scrooge.
In 1836 Alexander Veltman published Predki
Kalimerosa: Aleksandr Filippovich Makedonskii (The Forebears of Kalimeros:
Alexander, son of Philip of Macedon), which has been called the first original
Russian science fiction novel and the first novel to use time travel. In it the
narrator rides to ancient Greece on a hippogriff, meets Aristotle, and goes on
a voyage with Alexander the Great before returning to the 19th century.
In the science fiction anthology Far
Boundaries (1951), the editor August Derleth identifies the short story
"Missing One's Coach: An Anachronism", written for the Dublin
Literary Magazine by an anonymous author in 1838, as a very early time travel
story. In this story, the narrator is waiting under a tree to be picked up by a
coach which will take him out of Newcastle, when he suddenly finds himself
transported back over a thousand years. He encounters the Venerable Bede in a
monastery, and gives him somewhat ironic explanations of the developments of
the coming centuries. However, the story never makes it clear whether these
events actually occurred or were merely a dream—the narrator says that when he
initially found a comfortable-looking spot in the roots of the tree, he sat
down, "and as my skeptical reader will tell me, nodded and slept",
but then says that he is "resolved not to admit" this explanation.
A number of dreamlike elements of the
story may suggest otherwise to the reader, such as the fact that none of the
members of the monastery seem to be able to see him at first, and the abrupt
ending in which Bede has been delayed talking to the narrator and so the other
monks burst in thinking that some harm has come to him, and suddenly the
narrator finds himself back under the tree in the present (August 1837), with
his coach having just passed his spot on the road, leaving him stranded in
Newcastle for another night.
Charles Dickens' 1843 book A Christmas
Carol is considered by some to be one of the first depictions of time travel in
both directions, as the main character, Ebenezer Scrooge, is transported to
Christmases past, present and yet to come. These might be considered mere
visions rather than actual time travel, though, since Scrooge only viewed each
time period passively, unable to interact with them.
A clearer example of backwards time travel
is found in the popular 1861 book Paris avant les hommes (Paris before Men) by
the French botanist and geologist Pierre Boitard, published posthumously. In
this story the main character is transported into the prehistoric past by the
magic of a "lame demon" (a French pun on Boitard's name), where he
encounters such extinct animals as a Plesiosaur, as well as Boitard's imagined
version of an apelike human ancestor, and is able to actively interact with
some of them.
Another backwards time travel in fiction
is the short story "The Clock That Went Backward" by Edward Page
Mitchell, which appeared in the New York Sun in 1881.
Mark Twain's A Connecticut Yankee in King
Arthur's Court (1889), in which the protagonist finds himself in the time of
King Arthur after a fight in which he is hit with a sledge hammer, was another
early time travel story which helped bring the concept to a wide audience, and
was also one of the first stories to show history being changed by the time
traveler's actions.
The first time travel story to feature
time travel by means of a time machine was Enrique Gaspar y Rimbau's 1887 book
El Anacronópete. This idea gained popularity with the H. G. Wells story The
Time Machine, published in 1895 (preceded by a less influential story of time
travel Wells wrote in 1888, titled "The Chronic Argonauts"), which
also featured a time machine and which is often seen as an inspiration for all
later science fiction stories featuring time travel using a vehicle that allows
an operator to travel purposefully and selectively. The term "time machine",
coined by Wells, is now universally used to refer to such a vehicle.
Since that time, both science and fiction
have expanded on the concept of time travel.
Theory
Some theories, most notably special and
general relativity, suggest that suitable geometries of space-time, or specific
types of motion in space, might allow time travel into the past and future if
these geometries or motions are possible. In technical papers, physicists
generally avoid the commonplace language of "moving" or
"traveling" through time ("movement" normally refers only
to a change in spatial position as the time coordinate is varied), and instead
discuss the possibility of closed time like curves, which are world lines that
form closed loops in space-time, allowing objects to return to their own past.
There are known to be solutions to the equations of general relativity that
describe space times which contain closed time like curves (such as Gödel
space-time), but the physical plausibility of these solutions is uncertain.
Relativity predicts that if one were to
move away from the Earth at relativistic velocities and return, more time would
have passed on Earth than for the traveler, so in this sense it is accepted
that relativity allows "travel into the future" (according to
relativity there is no single objective answer to how much time has really
passed between the departure and the return, but there is an objective answer
to how much proper time has been experienced by both the Earth and the
traveler, how much each has aged. On the other hand, many in the scientific
community believe that backwards time travel is highly unlikely. Any theory
that would allow time travel would introduce potential problems of causality.
The classic example of a problem involving causality is the "grandfather
paradox": what if one were to go back in time and kill one's own
grandfather before one's father was conceived? But some scientists believe that
paradoxes can be avoided, by appealing either to the Novikov self-consistency
principle or to the notion of branching parallel universes.
Tourism in time
Stephen Hawking has suggested that the
absence of tourists from the future is an argument against the existence of
time travel—a variant of the Fermi paradox. Of course this would not prove that
time travel is physically impossible, since it might be that time travel is
physically possible but that it is never developed (or is cautiously never used);
and even if it is developed, Hawking notes elsewhere that time travel might
only be possible in a region of space-time that is warped in the correct way,
and that if we cannot create such a region until the future, then time
travelers would not be able to travel back before that date, so "This
picture would explain why we haven't been overrun by tourists from the future." This
simply means until we reach the point that a time machine is really invented,
we will not be able to see time travelers. Carl Sagan also once suggested the
possibility that time travelers could be here, but are disguising their
existence or are not recognized as time travelers. It is because bringing
unintentional changes in time-space continuum can bring about undesired
outcomes to those travelers. It can also alter established past events.
General relativity
However, the theory of general relativity
does suggest a scientific basis for the possibility of backwards time travel in
certain unusual scenarios, although arguments from semi classical gravity
suggest that when quantum effects are incorporated into general relativity,
these loopholes may be closed. These semi classical arguments led Hawking to
formulate the chronology protection conjecture, suggesting that the fundamental
laws of nature prevent time travel, but physicists cannot come to a definite judgment
on the issue without a theory of quantum gravity to join quantum mechanics and
general relativity into a completely unified theory.
Other approaches can be based on the idea
that time travel is possibly if a ship retained the velocity to travel at a
rate of speed that allows it to enter a dimension faster than time itself. In
Einstein’s ideas on this he proposes that at light speed the comparison of
earth’s motion and the velocity of light allow a ship to travel into the future
because it travels at a rate where the planets motion slows down. In Quanta
Physics we are not talking about a planets motion slowing down time but a rate
of speed so extreme that time breaks down into units beyond itself. In Quanta Physics Kawecki speaks about
“Instantaneous Time travel” a rate of velocity that since the universe acts as
a single unit possibly broken down into galactic realms that may dictate a
galactic clock coordinates all the planetary bodies are connected. Si if you
wanted to time travel you would have to journey at a velocity where time
actually doesn’t exist at all – a velocity where a positive forwards velocity
changes into a negative time coordinates.
Another approach involves a dense spinning
cylinder usually referred to as a Tipler cylinder, a GR solution discovered by
Willem Jacob van Stockum in 1936 and Kornel Lanczos in 1924, but not recognized
as allowing closed time like curves until an analysis by Frank Tipler in 1974.
If a cylinder is infinitely long and spins fast enough about its long axis,
then a spaceship flying around the cylinder on a spiral path could travel back
in time (or forward, depending on the direction of its spiral). However, the
density and speed required is so great that ordinary matter is not strong
enough to construct it. A similar device might be built from a cosmic string,
but none are known to exist, and it does not seem to be possible to create a
new cosmic string.
Physicist Robert Forward noted that a
naïve application of general relativity to quantum mechanics suggests another
way to build a time machine. A heavy atomic nucleus in a strong magnetic field
would elongate into a cylinder, whose density and "spin" are enough
to build a time machine. Gamma rays projected at it might allow information
(not matter) to be sent back in time; however, he pointed out that until we
have a single theory combining relativity and quantum mechanics, we will have
no idea whether such speculations are nonsense.
A more fundamental objection to time
travel schemes based on rotating cylinders or cosmic strings has been put
forward by Stephen Hawking, who proved a theorem showing that according to
general relativity it is impossible to build a time machine of a special type
(a "time machine with the compactly generated Cauchy horizon") in a
region where the weak energy condition is satisfied, meaning that the region
contains no matter with negative energy density (exotic matter). Solutions such
as Tipler's assume cylinders of infinite length, which are easier to analyze
mathematically, and although Tipler suggested that a finite cylinder might
produce closed time like curves if the rotation rate were fast enough, he did
not prove this. But Hawking points out that because of his theorem, "it
can't be done with positive energy density everywhere! I can prove that to
build a finite time machine, you need negative energy." This result comes
from Hawking's 1992 paper on the chronology protection conjecture, where he
examines "the case that the causality violations appear in a finite region
of space-time without curvature singularities" and proves that "there
will be a Cauchy horizon that is compactly generated and that in general
contains one or more closed null geodesics which will be incomplete. One can
define geometrical quantities that measure the Lorentz boost and area increase
ongoing round these closed null geodesics. If the causality violation developed
from a noncom pact initial surface, the averaged weak energy condition must be
violated on the Cauchy horizon." However, this theorem does not rule out
the possibility of time travel 1) by means of time machines with the
non-compactly generated Cauchy horizons (such as the Deutsch-Politzer time
machine) and 2) in regions which contain exotic matter (which would be
necessary for traversable wormholes or the Alcubierre drive). Because the
theorem is based on general relativity, it is also conceivable a future theory
of quantum gravity which replaced general relativity would allow time travel
even without exotic matter (though it is also possible such a theory would
place even more restrictions on time travel, or rule it out completely as
postulated by Hawkins’s chronology protection conjecture).
Experiments carried out
Certain experiments carried out give the
impression of reversed causality but are subject to interpretation. For
example, in the delayed choice quantum eraser experiment performed by Marlan
Scully, pairs of entangled photons are divided into "signal photons"
and "idler photons", with the signal photons emerging from one of two
locations and their position later measured as in the double-slit experiment,
and depending on how the idler photon is measured, the experimenter can either
learn which of the two locations the signal photon emerged from or "erase"
that information. Even though the signal photons can be measured before the
choice has been made about the idler photons, the choice seems to retroactively
determine whether or not an interference pattern is observed when one
correlates measurements of idler photons to the corresponding signal photons.
However, since interference can only be observed after the idler photons are
measured and they are correlated with the signal photons, there is no way for
experimenters to tell what choice will be made in advance just by looking at
the signal photons, and under most interpretations of quantum mechanics the
results can be explained in a way that does not violate causality.
The experiment of Lijun Wang might also
show causality violation since it made it possible to send packages of waves
through a bulb of caesium gas ( to act as a wormhole) in such a way that the
package appeared to exit the bulb 62 nanoseconds before its entry. But a wave
package is not a single well-defined object but rather a sum of multiple waves
of different frequencies (see Fourier analysis), and the package can appear to
move faster than light or even backwards in time even if none of the pure waves
in the sum do so. This effect cannot be used to send any matter, energy, or
information faster than light, so this experiment is understood not to violate
causality either.
The physicists Günter Nimtz and Alfons
Stahlhofen, of the University of Koblenz, claim to have violated Einstein's
theory of relativity by transmitting photons faster than the speed of light.
They say they have conducted an experiment in which microwave photons travelled
"instantaneously" between a pair of prisms that had been moved up to
3 ft (0.91 m) apart, using a phenomenon known as quantum tunneling. Nimtz told
New Scientist magazine: "For the time being, this is the only violation of
special relativity that I know of." However, other physicists say that
this phenomenon does not allow information to be transmitted faster than light.
Aephraim Steinberg, a quantum optics expert at the University of Toronto,
Canada, uses the analogy of a train traveling from Chicago to New York, but
dropping off train cars at each station along the way, so that the center of
the train moves forward at each stop; in this way, the speed of the center of
the train exceeds the speed of any of the individual cars.
Some physicists have performed experiments
that attempted to show causality violations, but so far without success. The
"Space-time Twisting by Light" (STL) experiment run by physicist
Ronald Mallett attempts to observe a violation of causality when a neutron is
passed through a circle made up of a laser whose path has been twisted by
passing it through a photonic crystal. Mallett has some physical arguments that
suggest that closed time like curves would become possible through the center
of a laser that has been twisted into a loop. However, other physicists dispute
his arguments.
Shengwang Du claims in a peer-reviewed
journal to have observed single photons' precursors, saying that they travel no
faster than c in a vacuum. His experiment involved slow light as well as
passing light through a vacuum. He generated two single photons, passing one
through rubidium atoms that had been cooled with a laser (thus slowing the
light) and passing one through a vacuum. Both times, apparently, the precursors
preceded the photons' main bodies, and the precursor travelled at c in a
vacuum. According to Du, this implies that there is no possibility of light
traveling faster than c (and, thus, violating causality). Some members of the
media took this as an indication of proof that time travel was impossible.
Non-physics-based
experiments
Several experiments have been carried out
to try to entice future humans, who might invent time travel technology, to
come back and demonstrate it to people of the present time. Events such as
Perth's Destination Day (2005) or MIT's Time Traveler Convention heavily
publicized permanent "advertisements" of a meeting time and place for
future time travelers to meet. Back in 1982, a group in Baltimore, MD.,
identifying itself as the Krononauts, hosted an event of this type welcoming
visitors from the future. These experiments only stood the possibility of
generating a positive result demonstrating the existence of time travel, but
have failed so far—no time travelers are known to have attended either event.
It is hypothetically possible that future humans have travelled back in time,
but have travelled back to the meeting time and place in a parallel universe.
Another factor is that for all the time
travel devices considered under current physics (such as those that operate
using wormholes), it is impossible to travel back to before the time machine
was actually made.
