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CHAPTER 1
SPACETIME INCEPTION: A HISTORICAL ANALYSIS
Our everyday perception of the universe comes from looking up at the
sky to see the Sun in the daytime and, more profoundly, to see
thousands of stars in the night sky.some of the oldest questions since
the beginnings of human thought are: How large is the universe? Did it
ever begin? What are the principal constituents of the present universe?
Will (space) time ever end? (Frampton 1).
From the time when man started to radically question the world around him and its
numerous mysteries, he observed that nature was in a constant state of flux. The
space which he inhabited was continuously forming, demolishing, and re-forming
itself through a certain period of time. This prompted him to ponder over the very
center of these magical transformations in nature. This culminated in the discovery
of the phenomenon called change which was constantly happening around in nature.
With the idea of change came the concept of spacetime. Change has always been a
consistent phenomenon. It is an obvious fact that spacetime and its presence can only
be perceived through observing this change that is happening all around the world,
up in the cosmos, and in the universe beyond. But it is highly essential that change
and spacetime both are to be observed, analyzed, and judged. Only through the
careful scrutiny using the senses and reason, we can determine the presence of
change and the passing of something, that something called spacetime.
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Spacetime, as we know it today, was not so dominant before. Philosophers and
Scientists may debate on the question of when spacetime began. But that is a
completely different and complex question with a number of answers, each
contradicting or supporting the other. Spacetime needs to be perceived and observed
and the whole question of its origin can be set aside for the more important one of how
it was considered by human beings, how it became a dominant phenomenon, how it
governed human thinking and consciousness, and how it became a powerful entity that
controlled our very existence, our life, our death, and our history.
Scientists agree that civilization actually began with the end of the ice age,
some 12,000 years ago. Progress from a prehistoric state was made possible because
man was inquisitive; philosophy was always in the blood of man. He perceived the
changes happening in nature, the change from light to darkness, the movement of the
heavenly bodies, and the endless yet periodic cycles of life and death. Living in a
social setup generated a sense of order and this need for order further gave strengthto studying the changes happening around and especially the influence of spacetime.
Aristotle was highly concerned with the changes that happened in nature. This
change seemed to prompt us to believe in the presence of spacetime. Aristotle said:
Whether, if soul did not exist, time would exist or not, is a question that may fairly be
asked; for if there cannot be someone to count there cannot be anything that can be
counted(Aristotle 29). Thus he proposes that when we are ready to observe,
perceive and record change, we can easily understand the passing of spacetime. But
when we disregard change and quit observing the passage of spacetime, it ceases to
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exist. Human reason and intellect thus plays a vital role in our understanding of
spacetime. Aristotle claimed that time is the measure of change but also that time is
not change because a change may be faster or slower, but not time (Aristotle
32). He advocates the notion that there is no time apart from change (41).
Aristotle considered spacetime as a natural entity similar to matter itself, something
which is hard to divide and something which is continuous. He said, In respect of
size there is no minimum; for every line is divided ad infinitum . Hence it is so with
time (Aristotle 36).
Aristotle also propagated the notion of absolute spacetime. He believed that
events determine the passage of spacetime, the period between two events which when
measured gives you the exact spacetime for these events to happen. Aristotle might
have been considering the natural events that took place all around nature. The
seasonal cycles and other such natural phenomenon could have been predicted thus
with some accuracy (Gaarder 107). Thus with the ideas of Aristotle, who dominatedworld thinking and philosophy for a considerable amount of time, the notion of
spacetime being absolute got a firm foundation. Aristotle also considered time to be
a separate entity from space. Later on his ideas were widely challenged; it became
clear that there was no such thing as absolute spacetime because it cannot be perceived
directly. We evaluate and understand spacetime differently, spacetime is different for
different people, even when two people are observing the same event their evaluation
of spacetime would be different.
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Christian Theologians who had their deep faith in divine power of God behind
the creation of the universe, believed spacetime also as an entity created by god. St.
Augustine was of the opinion that spacetime never existed before our universe was
created. But he does not hesitate to share his confusion with the philosophers of his
time regarding the definition of spacetime when he says: What then is time? If no one
asks me, I know what it is. If I wish to explain it to him who asks me, I do not know
(Augustine 18). St. Augustine had a very subjective view of spacetime. His ideas on
spacetime can be related with those of Aristotle. He firmly believed that spacetime is
nothing in reality but exists only in the minds apprehension of that reality.
Spacetime gradually started to dominate over our consciousness and thus a
need arose to generate methods to measure it, to contain it, to dominate it. Not all
human beings who lived in societies at that time felt the need to record spacetime.
Some were quite happy with observing the single most powerful entity that was seen
producing change- the sun. It was the giver of life, the destroyer, and the perpetuator of life. Observing the sun and its shifting from one position in the sky to the next was
more than enough to understand the passing of spacetime. But while living in a
civilized setup one felt the need for proper spacetime-keeping. Clocks were made in
the Middle East and Africa some 5000 to 6000 years ago. The need for order
prompted men to make clocks. Agriculture, religious festivities, and other social
activities required some kind of order; this order was provided by the keeping of
spacetime.
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Spacetime was always present, but even when man tried to measure it he could
never explain what it was, or where it could be found. But spacetime can be measured
with relation to some matter, or the motion of matter. The notion of spacetime
continuously flowing started to strengthen then, this was assisted by the invention of
the hourglass and the water clock. In an hourglass, the flow of sand, which was
carefully measured, reminded us of the flow of spacetime. The water clocks were
designed in such a way that the measured dripping of water governed our
measurement of spacetime. Hence spacetime was equated with the flow of particles, of
matter. The ideas of the philosopher Heraclites ring out clearly now. He had argued
that the only thing that was basic in nature was change and flow of spacetime.
Everything flows said Heraclites. Everything is in a state of flux and thus we
cannot step twice into the same river (Gaarder 54).
Still spacetime was mostly perceived through the cyclic, regular occurrence of
certain phenomenon. The seasonal cycle was vital in this, together with theobservation of the cosmos- the sun, the moon, and the stars. The wonders of the sky
(and the space beyond) were numerous. Cosmology thus played a vital part in forming
the concept of spacetime. The stars and their different constellations were considered
to signal some incident that might happen later in spacetime. The eclipse of the moon
also helped in determining days, months, and years. Religion too started to take root,
with its faith grounded in the human perception of change and the passing of
spacetime, spacetime which was just one among the entities which served the all
powerful perpetuator of this change- God.
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Clocks thus began to be recognized as devices capable of measuring spacetime, linear
spacetime. This was a period of a whole new scientific revolution of experimentation
and analysis. Proof of every hypothesis was provided and hence science became more
accurate and popularly acceptable. This influence of science dominated over the
masses and their ideas on spacetime. Newtons laws were even used to study the
motion of celestial bodies. His ground breaking laws on gravity and motion hence
opened a new chapter in the study of spacetime.
Newtons absolutism was refuted by Gottfried Leibniz. His studies were also
based on change. Leibniz proposed his theories on spacetime which he considered to
be relative; he said I hold space to be something merely relativeas an order of
coexistences, as time is an order of successions (Jolley 39).Newton challenged the
theories of Leibniz with his remarks on spacetime: Absolute space, in its own nature,
without relation to anything external, always remains similar and immovable (Jolley
39). Leibniz objected to Newtons views and proposed his relational theory of spacetime. His argument again was that spacetime was not an entity which had an
independent existence. It too depended on the happening of events no matter how
irregular they were. Leibniz considered the overall ordering of events as time.
The German philosopher Immanuel Kant considered spacetime as a form of
human intuition. He considered the relationship of spacetime with the human mind, a
unique concept at that time. Spacetime, for him, was more how the mind of a person
perceived it. Kant felt that human senses could only perceive the world through
spacetime. In his Critique of Pure Reason he says that the representation of space
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ships were lost at sea or were destroyed because of the inability to calculate precise
spacetime. With the invention of the chronometer by Harrison, navigation became
easier. Thus the quest for spacetime, in a way, assisted sea explorations. Such
explorations would later assist in colonization and imperialism is another aspect of this
altogether.
By the early 1800s mechanical parts identical to each other were produced
which facilitated the mass production of clocks. Clocks became cheaper and popular.
Families could now afford for them, spacetime started to become more personal, in a
sense a consumer item. From here begins the steps which would lead to todays lack
of regard for spacetime. The concept of linear spacetime, as promoted by Barrow,
Newton, Kant and other philosophers and scientists was still strong during this period.
This strengthened the place of the concept of linear spacetime in the mentality of
nineteenth century European science and philosophy.
Up until the beginning of the 20th
century, people continued to believe inabsolute spacetime. With Albert Einstein science found new ways to challenge the
notions of absolute spacetime. Albert Einstein was a German physicist whose path
breaking findings on the general and special relativity paved way to a fresh
understanding of spacetime in science. He demonstrated spacetime as not being an
absolute entity which flowed at a fixed rate (Parsons 113). He proved that spacetime,
is relative to the degree of motion of the observer (depending on the position of the
observer, distances either seem to compress or stretch, and clocks to run faster or more
slowly) (Parsons 113). Spacetime measurements thus could never have absolute,
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universal meaning. This groundbreaking theory in science put an end to absolute
spacetime. Spacetime became more personal, each person who experienced an event
in spacetime must perceive it differently. Stephen Hawking in his A Brief History of
Time says The theory of relativity, however, forces us to change fundamentally our
ideas of space and time. We must accept that time is not completely separate from and
independent of space (Hawking 52) To quote Hawking again:
the discovery that the speed of light appeared the same to every
observer, no matter how he was moving, led to the theory of relativity
and in that one had to abandon the idea that there was a unique absolute
time. Instead, each observer would have his own measure of time as
recorded by a clock that he carried: clocks carried by different
observers would not necessarily agree. Thus time became a more
personal concept, relative to the observer who measured it (Hawking
60).Relative spacetime is considered with regard to some motion. This is similar
to the measuring of spacetime using the rhythmical motion of a pendulum, a clock or
the motion of the heavenly bodies. Relative spacetime is against the notion of absolute
spacetime and hence it may not be accurate. It will vary from person to person. The
theory of relativity is grounded in the study of light and its speed. The speed of light is
now used to measure spacetime.
Henri Bergson was of the opinion that spacetime as it is experienced by the
consciousness is entirely different from the spacetime which we have come to take for
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granted through the configurations of clocks and calendars. Subjective consciousness
is vital to understand spacetime and to actually experience it. Bergson supported the
claims for the union of space and time into one entity called spacetime. He was of
the opinion that through our subjective perception of spacetime we can experience
spacetime as it really is: a continuum in which past, and present interpenetrate or
melt into each other (Parsons 111). Bergson calls this duration.
Another development was in the concept of relationship between space and
time, a unique concept of space time was formulated (at last!). In the very words of
Hermann Minkowski who played a vital role in promoting this concept of the union of
space and time: Henceforth space by itself, and time by itself, are doomed to fade
away into mere shadows, and only a kind of union of the two will preserve an
independent reality (Petkov 81). Minkowski was Einsteins former tutor and his ideas
helped Einstein in formulating his theory of Relativity which demonstrated and further
expanded on the claims that space and time are inseparable: time and spaceneeded to be understood as inseparable: as a combination of three-dimensional space
plus a fourth dimension of time (Parsons 112). Scientific discoveries in the field of
astronomy aided in the understanding of the universe and through it the concept of
spacetime. Edwin Hubbles observations suggested the possibility of a Big Bang as
the reason behind the origin of the universe and with it the birth of spacetime.
In this period heated debates were also held on whether spacetime is real or
just an imaginary construct. The philosopher John Ellis Mc Taggart was foremost in
this debate. He joined the long line of early philosophers including Zeno, Plato,
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Spinoza, and Hegel by claiming that spacetime did not exist. Philosophers including
Mc Taggart claimed that the passage of spacetime was mere illusion and the only real
entity was the present. He argues that the relationship between the past, present, and
the future is continuously changing, but spacetime is based upon this relationship
between past, present, and the future. A concept which keeps on changing and has no
firm base to stand upon is a false concept; hence spacetime is merely an illusion. In the
words of Mc Taggart from his The Unreality of Time,
Position in time, as time appears to usare distinguished in two ways.
Each position is earlier than some, and later than some, of the other
positions. And each position is either past, present, or future. The
distinctions of the former class are permanent, while those of the latter
are not. But an event, which is now present, was future and will be
past (Sherover 282).
Mc Taggart further asserts his claims by saying, it because the distinctions of past, present and future seem to be essential for time, time is unreal. Mc Taggart
implements his theories on spacetime to study the concept of history. He observes
that historical events have same spacetime characteristics as made up stories.
Stories and histories are based upon the past, present, and the future; concepts which
he proved as ever changing, hence histories, which rely on the memory of the past,
which varies from person to person is no better than made up stories (Sherover 278-
285).
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The advancement in science has facilitated the better understanding of our
universe. The quest for understanding our origins thus becomes a quest to crack the
confusion surrounding spacetime. Stephen Hawking and his revelations regarding the
Big Bang have proved to be vital. He considers the logical possibility that spacetime
might have had its beginning with the Big Bang since an earlier time simply would
not be defined (Hawking 64). According to him, the laws of science do not
distinguish between the past and the future. Events are described as things that happen
at a particular point in spacetime. While spacetime is unique for all events, it too is
affected by the events that happen in the universe. Thus Hawking makes it clear that
our views of the nature of time have changed over the years.
Hawking uses the second law of thermodynamics, which says that in a closed
system disorder, or entropy, always increases with spacetime, to put forward his
unique concept of the Arrow of Time. He says that, The increase of disorder or
entropy with time is one example of what is called an arrow of time, something thatdistinguishes the past from the future, giving a direction to time (Hawking 187). His
views on the Psychological Arrow of Time is very insightful, according to him the
psychological arrow of time, is the direction in which we feel time passes, the
direction in which we remember the past but not the future (Hawking 188).
Recent debates have been held on discussing whether the universe really had a
beginning and with it did spacetime too began, and also whether with the end of this
universe spacetime too would end. Scientists have put forward the concept of the Big
Rip a phenomenon to happen some trillion years in the future. But these scientific
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getting due representation and reflection in fiction was high. While the fictional
universe tried to portray the world around as truthfully as possible (initially),
spacetime was utilized as a mode to order events and perceptions in a narrative. A
symbiosis was the vision behind such a cooperation, but unfortunately it did not take
effect due to numerous reasons.