this. From our observations of
the approach, physical mass and general appearance of the alien ship,
we are convinced that some method of faster-than-light propulsion is
being used. Since Einsteinian math holds FTL travel to be impossible in
this spacetime continuum, we must fall back on those vaguer theories
which suggest that the physical laws governing this continuum may be
in some fashion sidestepped by traveling along or within some highly
speculative hyperdimension. But as things stand you would very probably
not know a hyperdimensional propulsion device if it stood up and bit you,
and neither in all probability would I . . ."
There was a small, dry, academic cough, then the voice went on, "So
the purpose of this lecture is, by outlining current thinking on this
subject together with our speculations and supporting math, to give you
a slightly better chance of recognizing a hyperdimensional generator if
you should happen to see one.
"Subsequent lectures on a wide range of subjects are expected to include
. . ."
McCullough was beginning to feel concern for a future which now promised
to be positively rather than negatively boring. He hoped the Prometheus
people knew what they were doing and had taken pains to pick the right
kind of lecturer. When the idea had been first mentioned they had agreed
that without visual aids or textbooks, the process of learning new and
difficult subjects would be anything but easy. If handled properly, the
lectures would help negate boredom by engendering a competitive spirit
among the two ships' crews. This would be a very good thing provided
it did not cause some people to appear less bright than their fellows,
a situation which could open the way to all sorts of conflicts and
emotional disturbances. But all this had been taken into consideration,
the Prometheus astronauts had been told, and any harmful side effects
would be guarded against.
Probably time alone would tell, McCullough thought. At least this lecturer
possessed a rudimentary sense of humor.
He was saying, ". . . To give you an example, our knowledge of
extraterrestrial biology, physiology and sociology is nil. But in future
lectures we will prepare you to a certain extent for whatever you may meet
by considering in detail the sexual mores of certain isolated cultures
on our own planet and the exotic reproductive mechanisms of our more
alien terrestrial animals, insects and plants, and by formulating the
type of social system these creatures might be expected to develop were
they to rise to a human level of intelligence.
"All this is simply an indication of what you may expect from the various
specialist lecturers who will follow me.
"Before I commence my series of lectures it might be better if I introduced
myself. I am Doctor -- of Philosophy, not Medicine -- Edward Ernest Pugh,
Professor of Mathematics at the University of Coleraine, and Director of
its Department of Extramural Studies . . ."
Berryman turned to stare very solemnly out of the Earth-side port. He said,
"Just how extramural can a student get . . ."
Walters and McCullough laughed and Professor Pugh asked them to begin
by considering a tesseract.
chapter three
Time passed.
Their education grew while Earth and the apparent size of their vehicle
shrank. When the bulkheads pressed in on them too closely, they took
turns going outside, treating incipient claustrophobia with threatened
agoraphobia. At least that was how Berryman described the process. But
he talked that way, as they all did, to hide his real feelings. The
simple truth was that on the end of a long safety line, with their
vehicle looking like some surrealistic toy five hundred yards away,
the whole of Creation was spread out around them in sharp focus and
perfect 3-D and it was not a sight which could be easily talked about.
With the increased distance from Earth