The writer commences:—“There
was a time, when the earth was to all appearance utterly
destitute both of animal and vegetable life, and when
according to the opinion of our best philosophers it
was simply a hot round ball with a crust gradually
cooling. Now if a human being had existed while
the earth was in this state and had been allowed to
see it as though it were some other world with which
he had no concern, and if at the same time he were
entirely ignorant of all physical science, would he
not have pronounced it impossible that creatures possessed
of anything like consciousness should be evolved from
the seeming cinder which he was beholding? Would
he not have denied that it contained any potentiality
of consciousness? Yet in the course of time consciousness
came. Is it not possible then that there may
be even yet new channels dug out for consciousness,
though we can detect no signs of them at present?
“Again. Consciousness,
in anything like the present acceptation of the term,
having been once a new thing—a thing, as
far as we can see, subsequent even to an individual
centre of action and to a reproductive system (which
we see existing in plants without apparent consciousness)—why
may not there arise some new phase of mind which shall
be as different from all present known phases, as the
mind of animals is from that of vegetables?
“It would be absurd to attempt
to define such a mental state (or whatever it may
be called), inasmuch as it must be something so foreign
to man that his experience can give him no help towards
conceiving its nature; but surely when we reflect
upon the manifold phases of life and consciousness
which have been evolved already, it would be rash to
say that no others can be developed, and that animal
life is the end of all things. There was a time
when fire was the end of all things: another
when rocks and water were so.”
The writer, after enlarging on the
above for several pages, proceeded to inquire whether
traces of the approach of such a new phase of life
could be perceived at present; whether we could see
any tenements preparing which might in a remote futurity
be adapted for it; whether, in fact, the primordial
cell of such a kind of life could be now detected upon
earth. In the course of his work he answered
this question in the affirmative and pointed to the
higher machines.
“There is no security”—to
quote his own words—“against the ultimate
development of mechanical consciousness, in the fact
of machines possessing little consciousness now.
A mollusc has not much consciousness. Reflect
upon the extraordinary advance which machines have
made during the last few hundred years, and note how
slowly the animal and vegetable kingdoms are advancing.
The more highly organised machines are creatures
not so much of yesterday, as of the last five minutes,
so to speak, in comparison with past time. Assume
for the sake of argument that conscious beings have
existed for some twenty million years: see what
strides machines have made in the last thousand!
May not the world last twenty million years longer?
If so, what will they not in the end become?
Is it not safer to nip the mischief in the bud and
to forbid them further progress?
“But who can say that the vapour
engine has not a kind of consciousness? Where
does consciousness begin, and where end? Who
can draw the line? Who can draw any line?
Is not everything interwoven with everything?
Is not machinery linked with animal life in an infinite
variety of ways? The shell of a hen’s
egg is made of a delicate white ware and is a machine
as much as an egg-cup is: the shell is a device
for holding the egg, as much as the egg-cup for holding
the shell: both are phases of the same function;
the hen makes the shell in her inside, but it is pure
pottery. She makes her nest outside of herself
for convenience’ sake, but the nest is not more
of a machine than the egg-shell is. A ‘machine’
is only a ‘device.’”
Then returning to consciousness, and
endeavouring to detect its earliest manifestations,
the writer continued:-
“There is a kind of plant that
eats organic food with its flowers: when a fly
settles upon the blossom, the petals close upon it
and hold it fast till the plant has absorbed the insect
into its system; but they will close on nothing but
what is good to eat; of a drop of rain or a piece of
stick they will take no notice. Curious! that
so unconscious a thing should have such a keen eye
to its own interest. If this is unconsciousness,
where is the use of consciousness?
“Shall we say that the plant
does not know what it is doing merely because it has
no eyes, or ears, or brains? If we say that it
acts mechanically, and mechanically only, shall we
not be forced to admit that sundry other and apparently
very deliberate actions are also mechanical?
If it seems to us that the plant kills and eats a fly
mechanically, may it not seem to the plant that a
man must kill and eat a sheep mechanically?
“But it may be said that the
plant is void of reason, because the growth of a plant
is an involuntary growth. Given earth, air, and
due temperature, the plant must grow: it is like
a clock, which being once wound up will go till it
is stopped or run down: it is like the wind blowing
on the sails of a ship—the ship must go
when the wind blows it. But can a healthy boy
help growing if he have good meat and drink and clothing?
can anything help going as long as it is wound up,
or go on after it is run down? Is there not
a winding up process everywhere?
“Even a potato {5} in a dark
cellar has a certain low cunning about him which serves
him in excellent stead. He knows perfectly well
what he wants and how to get it. He sees the
light coming from the cellar window and sends his
shoots crawling straight thereto: they will crawl
along the floor and up the wall and out at the cellar
window; if there be a little earth anywhere on the
journey he will find it and use it for his own ends.
What deliberation he may exercise in the matter of
his roots when he is planted in the earth is a thing
unknown to us, but we can imagine him saying, ’I
will have a tuber here and a tuber there, and I will
suck whatsoever advantage I can from all my surroundings.
This neighbour I will overshadow, and that I will
undermine; and what I can do shall be the limit of
what I will do. He that is stronger and better
placed than I shall overcome me, and him that is weaker
I will overcome.’
“The potato says these things
by doing them, which is the best of languages.
What is consciousness if this is not consciousness?
We find it difficult to sympathise with the emotions
of a potato; so we do with those of an oyster.
Neither of these things makes a noise on being boiled
or opened, and noise appeals to us more strongly than
anything else, because we make so much about our own
sufferings. Since, then, they do not annoy us
by any expression of pain we call them emotionless;
and so qua mankind they are; but mankind is
not everybody.
“If it be urged that the action
of the potato is chemical and mechanical only, and
that it is due to the chemical and mechanical effects
of light and heat, the answer would seem to lie in
an inquiry whether every sensation is not chemical
and mechanical in its operation? whether those things
which we deem most purely spiritual are anything but
disturbances of equilibrium in an infinite series
of levers, beginning with those that are too small
for microscopic detection, and going up to the human
arm and the appliances which it makes use of? whether
there be not a molecular action of thought, whence
a dynamical theory of the passions shall be deducible?
Whether strictly speaking we should not ask what
kind of levers a man is made of rather than what is
his temperament? How are they balanced?
How much of such and such will it take to weigh them
down so as to make him do so and so?”
The writer went on to say that he
anticipated a time when it would be possible, by examining
a single hair with a powerful microscope, to know
whether its owner could be insulted with impunity.
He then became more and more obscure, so that I was
obliged to give up all attempt at translation; neither
did I follow the drift of his argument. On coming
to the next part which I could construe, I found that
he had changed his ground.
“Either,” he proceeds,
“a great deal of action that has been called
purely mechanical and unconscious must be admitted
to contain more elements of consciousness than has
been allowed hitherto (and in this case germs of consciousness
will be found in many actions of the higher machines)—Or
(assuming the theory of evolution but at the same time
denying the consciousness of vegetable and crystalline
action) the race of man has descended from things
which had no consciousness at all. In this case
there is no a priori improbability in the descent
of conscious (and more than conscious) machines from
those which now exist, except that which is suggested
by the apparent absence of anything like a reproductive
system in the mechanical kingdom. This absence
however is only apparent, as I shall presently show.
“Do not let me be misunderstood
as living in fear of any actually existing machine;
there is probably no known machine which is more than
a prototype of future mechanical life. The present
machines are to the future as the early Saurians to
man. The largest of them will probably greatly
diminish in size. Some of the lowest vertebrate
attained a much greater bulk than has descended to
their more highly organised living representatives,
and in like manner a diminution in the size of machines
has often attended their development and progress.
“Take the watch, for example;
examine its beautiful structure; observe the intelligent
play of the minute members which compose it: yet
this little creature is but a development of the cumbrous
clocks that preceded it; it is no deterioration from
them. A day may come when clocks, which certainly
at the present time are not diminishing in bulk, will
be superseded owing to the universal use of watches,
in which case they will become as extinct as ichthyosauri,
while the watch, whose tendency has for some years
been to decrease in size rather than the contrary,
will remain the only existing type of an extinct race.
“But returning to the argument,
I would repeat that I fear none of the existing machines;
what I fear is the extraordinary rapidity with which
they are becoming something very different to what
they are at present. No class of beings have
in any time past made so rapid a movement forward.
Should not that movement be jealously watched, and
checked while we can still check it? And is
it not necessary for this end to destroy the more
advanced of the machines which are in use at present,
though it is admitted that they are in themselves harmless?
“As yet the machines receive
their impressions through the agency of man’s
senses: one travelling machine calls to another
in a shrill accent of alarm and the other instantly
retires; but it is through the ears of the driver
that the voice of the one has acted upon the other.
Had there been no driver, the callee would have been
deaf to the caller. There was a time when it
must have seemed highly improbable that machines should
learn to make their wants known by sound, even through
the ears of man; may we not conceive, then, that a
day will come when those ears will be no longer needed,
and the hearing will be done by the delicacy of the
machine’s own construction?—when its
language shall have been developed from the cry of
animals to a speech as intricate as our own?
“It is possible that by that
time children will learn the differential calculus—as
they learn now to speak—from their mothers
and nurses, or that they may talk in the hypothetical
language, and work rule of three sums, as soon as
they are born; but this is not probable; we cannot
calculate on any corresponding advance in man’s
intellectual or physical powers which shall be a set-off
against the far greater development which seems in
store for the machines. Some people may say that
man’s moral influence will suffice to rule them;
but I cannot think it will ever be safe to repose
much trust in the moral sense of any machine.
“Again, might not the glory
of the machines consist in their being without this
same boasted gift of language? ‘Silence,’
it has been said by one writer, ’is a virtue
which renders us agreeable to our fellow-creatures.’”