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ever hear a science fiction fan triumphantly pronounce
that "the science fiction of today is the science of tomorrow"?
for the most part, it's not a demonstrably reasonable statement. the science
fiction of today is an entertainment product containing very little appeal
to the analytical mind**, and the science-fiction of tomorrow will look
a great deal like the science fiction of today.
** (as an example consider those nifty sound effects when a starship fires
its 'photon torpedoes' or when a starship is blown up. in the absence of
a medium to conduct sound waves, as is the case in space, there is no sound.
i mean no offense to the reader who enjoys sci-fi, and who at this point
may be protesting -- "lighten-up, it's just fantasy, just fun stuff."
i have nothing against fun [per se]. fun is fun. for some fans however,
it seems that science-fiction is embraced as an alternative science and
as a philosophical footing. i just have fun pointing out that this is quite
silly. and in that vein, i continue to have fun...)
ever see a star trek tv show where the chief engineering
officer informs the captain that the starship enterprise has lost power
and therefore has "stopped dead" in space? perhaps the engineer
should enroll in a high school physics class. newton knew three hundred
years ago that if the starship enterprise were cruising at 'warp factor
2', [ignoring that his skeptical mind would demand to know exactly what
a warp factor is] and its engines lost all power, it would continue to move
in uniform motion until something with sufficient mass or energy changed
its motion. einstein's relativity informs us that at no time could the enterprise,
or any other physical object, actually be motionless. this concept is not
an esoteric abstraction, it is easily demonstrated: let us suppose that
the starship has been described as having "stopped dead" in intergalactic
space. we must ask -- stopped dead relative to what? if the position of
the craft is not changing relative to a given galaxy, or other object (and
this is the only way in which the engineer and captain might perceive the
craft as having come to a stop), this means that the starship's trajectory
and velocity are identical to this object -- this object which is not at
rest, rather it is moving away from or toward each of the universe's hundred
billion plus galaxies. when our captain asks his navigator to check the
craft's position relative to another object, he will find that the starship
is either tending toward this object or away from it and is not "stopped
dead" in space.
(okay, you're not so sure. "what about the 'constellations',"
you ask. "they've been 'there' for ages," you say. but 'there'
is, of course, relative. these local stars actually move along vectors highly
similar to our Earthly journey through space. more distant objects seem
not to move because of the distance involved and the insensitivity of casual
observation). |