The given passage emphasizes on how the pyramid is built by ancient Egyptians especially how they lift those massive rocks. The author of the passage mentions three possible explanations which are refuted by the lecturer by using its own reasons and evidence.
The first point that lecturer makes is about the external ramps which according to the passage, were used to reduce the amount of time and labour needed to carry materials. However, the lecturer refutes this point stating that even if the ancient Egyptians have used ramps to carry rocks it would still be difficult to move them near at the higher levels of the pyramid with increased inclination. The lecturer also points out that in case of spiral and zigzagging ramps the turning the rocks at corners will still be a problem.
The second theory mentioned in the passage is, ancient Egyptians might have used internal ramps with notches at each corner for easier change of direction while pulling rocks. This theory is turned down by the lecturer saying that there is no evidence of internal ramping, And this speculation is completely based on computer simulation. To verify this theory one must go inside the pyramid which no one ever did. Also, the lecturer casts doubt about the existence of spiral and zigzagging ramps during that time.
Lastly, the passage states the theory of limestone where they might have moulded the pyramid at the first place. Lecturer contradicts this theory stating that it doesn't explain how they got the pyramid faces perfectly at the top and also points out that with stone tools of their time it is very difficult to achieve such a level of perfection in such a less time.
In this way, the passage explains three different theories about pyramid construction and the lecturer opposes to all of them using his evidence and reasons.
The
given
passage
emphasizes on how the
pyramid
is built
by ancient Egyptians
especially
how they lift those massive
rocks
. The author of the
passage
mentions three possible explanations which
are refuted
by the
lecturer
by using its
own
reasons and evidence.
The
first
point
that
lecturer
makes
is about the external
ramps
which according to the
passage
, were
used
to
reduce
the amount of time and
labour
needed to carry materials.
However
, the
lecturer
refutes this
point
stating that even if the ancient Egyptians have
used
ramps
to carry
rocks
it would
still
be difficult to
move
them near at the higher levels of the
pyramid
with increased inclination. The
lecturer
also
points
out that in case of spiral and zigzagging
ramps
the turning the
rocks
at corners will
still
be a problem.
The second
theory
mentioned in the
passage
is, ancient Egyptians might have
used
internal
ramps
with notches at each corner for easier
change
of direction while pulling
rocks
. This
theory
is turned
down by the
lecturer
saying that there is no evidence of internal ramping, And this speculation is completely based on computer simulation. To verify this
theory
one
must
go inside the
pyramid
which no one ever did.
Also
, the
lecturer
casts doubt about the existence of spiral and zigzagging
ramps
during that time.
Lastly
, the
passage
states the
theory
of limestone where they might have
moulded
the
pyramid
at the
first
place.
Lecturer
contradicts this
theory
stating that it doesn't
explain
how they
got
the
pyramid
faces
perfectly
at the top and
also
points
out that with stone tools of their time it is
very
difficult to achieve such a level of perfection in such a less time.
In this way, the
passage
explains
three
different
theories
about
pyramid
construction and the
lecturer
opposes to all of them using his evidence and reasons.