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Y3K: The Science of the Next Millennium
The Future of the Human Body
by Robert J. Sawyer
Copyright © 2000 by Robert J. Sawyer
All Rights Reserved
In the near future, stem-cell technology will allow us to
regrow accidentally severed or damaged limbs or tissue.
Dismemberment, paraplegia, and disorders such as Parkinson's
disease will all be things of the past. Cancer, too, will be
fully curable. And obesity, heart disease, and other ailments
will be eliminated. We will also have absolute defenses against
viral and bacterial infection death, or even lost days,
through disease will be all but unheard of.
The cloning of humans is years, not centuries, away. Surely
through much of the next millennium it will be considered one of
several normal options for human reproduction: dynasties
stretching back a thousand years will exist by the year 3000,
each member of which is genetically identical to the founder.
Cloning, coupled with the development of artificial wombs,
will have profound implications for human sexuality and family
structures: males will no longer be necessary in order to begin
life, females will no longer be necessary to bring fetuses to
term. Individuals will be able to reproduce themselves without
partners, if they wish, and same-sex partnerships will be fully
capable of reproduction. A wide range of parenting/family
structures will be considered normal.
But even cloning and sexual reproduction will eventually be
considered quaint. More popular will be the ultimate in
test-tube babies: true designer offspring, whose DNA is created
not from gametes provided by the parents but rather is built up
nucleotide by nucleotide, precisely coding for the creation of a
new human being with specific requested traits. We will know
what every gene combination does, and will be able to create DNA
that will produce, for instance a child who will love baseball,
be a fan of science fiction, sing fabulously, have an aptitude
for mathematics, and like to eat cooked vegetables. (Of course,
we will discover that some possibilities, because of the
interrelationship of genes, won't be realizable: it may be
impossible to produce a human child who is both a highly skilled
boxer and also loves to make children's toys.)
Indeed, the life programmers will be able to go further,
making new kinds of human beings: humans with gills who can live
underwater (leading to the development of vast submerged and
floating cities, opening up new territories to relieve
overcrowding), humans adapted for arctic conditions, and humans
who can live on the surface of Mars before it is terraformed (see my
speculations on the future of the solar system).
But, no matter how a child is produced, its lifespan will be
much longer than ours are today. Building on 20th-century
research into telomeres, we will learn how to make cells
reproduce forever without forming tumors; humans will live for
hundreds if not thousands of years. (We'll also learn how to
store memories in cybernetic implants, so that our brain tissue
can continue to regenerate throughout our lives without us losing
track of our pasts.)
Meanwhile, the selective cloning of organs and body tissues
will also increase our lifespans: people will routinely replace
their eyes, hearts, lungs, kidneys, and other parts with cloned,
younger versions grown as required without the need or the
thorny ethical dilemmas of producing full-body clones.
And we will eliminate that pesky annoyance known as sleep;
with a few genetic tweaks, these prolonged lifespans will be
spent entirely awake, making them seem even more generous.
We will also eliminate eating and digestion, hideously
inefficient ways of fueling a body, dispensing with them in
favor of cheap cold-fusion bio-energy packs.
Such power sources, and the aforementioned memory implants,
will be only one of the few artificial devices buried in our
bodies. Others will boost our physical strength and augment our
mental capabilities. Computer implants will provide us with
instantaneous access to information; merely thinking about a
topic will be enough to download information about it into our
brains (goodbye, web surfing; hello, global consciousness). In
addition, we will be able to communicate by built-in transceivers
with others anywhere on the planet no more cellphones; just
thinking that you'd like to have a word with your Aunt Molly will
be enough to put you in touch with her: telepathy simulated
through technology.
After forty millennia of biological stability fully
modern humans emerged 40,000 years ago we will take full
control of our evolution in the coming millennium, producing
healthy, happy, near-immortal beings with vastly enhanced
abilities.
More Good Reading
Rob's speculations on the future of:
Rob's essay on life in the future: "The Age of Miracle and Wonder"
My Very Occasional Newsletter
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