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- The Holodeck Mini-FAQ
- (updated August 18, 1993)
-
- ...................................................................
-
- Part I: How real is real?
-
- "How does it work?"
-
- The Holodeck uses 5 levels of simulation:
-
- 1) Things in the distance are holograms projected on the walls.
- (Like the wall in "Encounter at Farpoint" or "Ship in a Bottle".)
-
- 2) Nearby things are holograms projected into space. An example
- would be a tree or lamppost.
-
- 3) A fixed object that requires interaction is a combination of a
- projected hologram and shaped forcebeams. An example of this
- would be most holohumans (eg, the gangsters who dissolved in "The
- Big Goodbye" ), or Picard's horse.
-
- 4) A _static_ object which may be picked up, eaten, etc, is
- physically replicated onto the Holodeck. An example would be
- food, paper, a snowball, etc. These objects are independent once
- created, and may be carried off Holodeck.
-
- 5) An _animated_ object which may be picked up, eaten, etc (for
- example, Minuet in "11001001") is a combination of 3 and 4, as
- well as "Holodeck matter", a state where objects are held
- together by forcebeams and not their own molecular cohesion
- ("Ship in a Bottle"). This combination is the hardest to
- generate. The actions of holograms and forcebeams must be
- coordinated seamlessly with replication of matter, and when
- the simulation ends, things look very bizzare (eg, Worf's
- combat partners.)
-
- Note that levels 1-4 are relatively trivial for the ship, while
- level 5 requires more computation time... which could explain
- Riker's surprise at Minuet (though he hadn't experienced her charms
- at that point). It may also have not been possible prior to the
- enhancements made by the Bynars in "11001001".
-
- ....
-
- "What about eating on the Holodeck? Does Troi do it to keep thin
- with all that chocolate she eats?"
-
- Any food consumed on the Holodeck would be of level 4 simulation -
- it will be as real as replicated food from a replication
- terminal.
-
- ....
-
- "What is this 'meat puppet' description I've heard used?"
-
- A 'meat puppet' is a old term resurrected to describe a replicated
- humanoid form created on the Holodeck, and dragged around by
- forcebeams. If the forcebeams failed, you'd be left with a limp,
- lifeless body.
-
- ....
-
- "So can you take things off of the Holodeck?"
-
- Yes. Any object replicated on the Holodeck may leave.
- Unfortunately, it is sometimes hard to tell what is replicated,
- and what is no. Snow, such as the snowball thrown by Wesley in
- "The Naked Now" is easily replicated, and dampness is hard to
- simulate. The book thrown by Picard in "Ship in a Bottle" would
- be easily simulated by force beams and thus was not replicated.
-
- The paper in "Elementary, Dear Data" was likely simulated until
- the computer realized that it was going to be carried off the
- Holodeck, at which point it would have been seamlessly replaced
- with a replicated copy.
-
- ....
-
- "Didn't Picard lie to Moriarty (in "Elementary, Dear Data")?"
-
- According to various reliable sources, that was Gene Roddenberry's
- intention. If the paper could have left, Moriarty should have been
- able to, goes the logic. Fortunately, this scene was cut, and as
- always, canon is what we see on the screen, big or small. This
- means the whole argument against replicating people holds - that
- the computer cannot store that much information.
-
- ....
-
- "What about beaming things off the Holodeck (ala "Ship in a
- Bottle")?"
-
- This has never been tried, as explained in the episode, which is
- why the computer was unable to simulate the results. Replicated
- objects should be able to be transported out of the Holodeck, but
- anything relying on the forcebeams would instantly collapse.
-
- As for uncoupling the Heisenberg Compensators - that would give a
- random quantum state to each element of the transported object.
- It would be akin to a molecular-resolution transport - probably
- deadly for any living being.
-
- ....
-
- "Whats this about 'HoloSex'?"
-
- If current trends are a pattern for the future to follow, then
- Virtual Reality Sex will be alive and well long into the 24th
- century. (Side note: Check out the Rec.Games.Mud FAQL if you
- don't believe me.) Quark's bar on DS9 has personal holosuites
- on the second floor. Various stimulating programs are available.
-
- In "The Perfect Mate", Riker manages to croak out something about
- "I'll be in Holodeck 4..." after an encounter with the metamorph.
- No proof that he did anything, true. Minuet (in "11001001") was
- "As real as you need me to be." Uh-huh. Geordi doesn't seem to have
- much luck off the 'deck, it seems, nor does Reg Barclay.
-
- Draw what conclusions you will.
-
- ....
-
- "What if you urinate/defecate/excrete whatever on the Holodeck?"
-
- One would hope the Holodeck is smart enough to clean up after
- you. It probably gets transmuted into some form the bulk matter
- stores can use, and saved for later use by replicators or the
- Holodeck again. The ultimate in recycling.
-
- ....
-
- "Can you get hurt on the Holodeck?"
-
- Yes. Even when it isn't malfunctioning, the simulation can't
- protect you from your own stupidity. Broken ribs and arms from
- cliff diving and other sports practiced on the holodeck are often
- seen treated in Sick Bay.
-
- ....
-
- "But the replicators can't even make unhealthy food!"
-
- Replicators can (within limits of technology and energy) produce
- anything for which they have a pattern. Certain objects may need
- security clearance. But you can have the replicator make a glass
- of water, and use the glass as a weapon - it may be smart, but
- its not foolproof.
-
- ....
-
- "What happened to the "arch" they used in the first season?"
-
- Its intended use was as a way to program the Holodeck and access
- the ship's computer, as well as a virtual reality safeword. In
- later episodes, they just used the "exit" and programmed the
- computer by voice. It is still around, recently seen in "Ship in
- a Bottle". The arch was how Moriarty first learned that he was a
- simulation, and gained control of the ship in "Elementary, Dear
- Data".
-
- ......................................................................
-
- Part II: Where does it all end?
-
- "How do they manage to keep walking for hours and hours?"
-
- The Holodeck has a forcefield treadmill. If its occupants get
- too close to the walls, they are shifted away. Since the
- Holodeck can modify its gravity in 3 dimensions, the occupants
- won't notice any inertial change.
-
- ....
-
- "But what about the walls seen in "Encounter at Farpoint" and
- "Ship in a Bottle", demonstrated by Data?"
-
- In "Farpoint", Data threw a Holodeck-generated rock at the wall.
- There are a few possibilities. Either the computer realized the
- intent of the demonstration, and didn't replace the rock with an
- image on the Holodeck wall; or the "simple pattern" of that
- simulation didn't allow for treadmill-scrolling; or the Holodeck
- computer wasn't that powerful enough, pre-Bynar intervention.
-
- In "Ship in a Bottle", Data throws his own communicator at the
- wall. The Holodeck must have safeguards not to summarily destroy
- things, so it didn't do anything to affect the communicator.
-
- ....
-
- "What happens if two real people enter a Holodeck and start
- running away from each other?"
-
- The simplest answer is that the Holodeck "compartmentalizes",
- in effect becoming a separate Holodeck for each person within it.
- In reality, the two people would probably be only a few meters
- apart, but would be separated by a Holodeck-projected "wall".
- If they turned to look at each other, they would see an image
- of the other projected on that wall.
-
- ....
-
- "What if they take a real rock in with them, walk away from each
- other (past the physical limits of the Holodeck) and then toss
- the rock back and forth?"
-
- This one is too easy. Assume the rock is sentient. When it leaves
- the hand of the thrower, the holodeck "wraps" it in its own
- miniature simulation, and hides it from the two people, who (in
- their own mini-Holodeck) see only an image of the rock. The
- rock is then moved (with forcebeams) from the thrower to the
- catcher, given the appropriate kinetic energy along the way. From
- the rock's point of view nothing out of the ordinary happens.
-
- ....
-
- "So what if two people take a long rope, and start walking
- away from each other?"
-
- The answer in this instance could be that the Holodeck hides part
- of the rope, and projects an image of a tightening rope along with
- forcebeam-generated tension.
-
- In general, though, the answer to these 'boggle the Holodeck'
- questions is that no, its not perfect. You will encounter
- limitations to the technology, and gaps in the 'reality' will
- become apparent. However, you really do have to be looking for
- problems to find them.
-
- ......................................................................
-
- Part III: What if...?
-
- "Can you go swimming on the Holodeck?"
-
- Yes. Cliff diving has been mentioned as a recreation sport aboard
- the Holodeck, as has kayaking.
-
-
- "So does it replicate all of that water?"
-
- Probably not. What would likely happen is that a "personal space"
- of water would be replicated around the person, and the rest of
- the water in the pool, river, etc, would be a visual and auditory
- simulation. There is no canon evidence one way or the other,
- however.
-
-
- "So what if someone is scuba diving, and the Holodeck door
- opens?"
-
- Very likely, the forcebeams would give the sensation of a water
- surface over the doorway. Depending on the simulation, it might
- be possible for someone to wander onto a Holodeck, in normal duty
- uniform, and walk around someone who is swimming several meters
- below the "surface" of the pool. Only the swimmer would feel the
- sensation of water around them. Again, no canonical evidence
- either way.
-
- ....
-
- "How about a Holodeck within the Holodeck?"
-
- This is done in "Ship in a Bottle". In fact, they end up with a
- Holodeck inside a Holodeck inside a Holodeck by the end of the
- episode. Is there a limit? Probably. No evidence for what that
- limit might be.
-
- ....
-
- "Can you get the Holodeck to simulate someone?"
-
- Yes. Although done numerous times, including "Ship in a Bottle"
- and "A Matter of Perspective"; "Hollow Pursuits" is the prime
- example of this, and brings up the question...
-
-
- "Is it ethical to simulate someone without their permission?"
-
- Systems of ethics are by no means universal across cultural
- lines. Nor can we extend our 20th century foibles to the 24th
- century, where such things may be common place. In every
- instance, however, people thusly simulated have reacted
- negatively when they find out - for example, Troi, Riker, and
- Picard in "Hollow Pursuits" and Dr. Leah Brahms in "Booby Trap"
- and "Galaxy's Child".
-
-
- "So does the computer stop these simulations?"
-
- Nope. Moriarty was able to do it in "Ship in a Bottle", without
- any special permissions. It is amusing, however, to watch the
- episode again, and see how the simulated characters appear
- slightly stiff.
-
- ....
-
- "Could you simulate the Enterprise bridge from the Holodeck, and
- use it to take over?"
-
- The simulation would not be a problem - the Enterprise computer
- has extensive files of all Federation starship layouts, as shown
- in "Relics".
-
- In three episodes, the Enterprise has been controlled from the
- Holodeck - by Barclay in "Nth Degree", with a neural interface;
- in "Elementary, Dear Data", where Moriarty somehow cracked the
- security codes via the Holodeck Arch; and in "Ship in a Bottle",
- where Picard inadvertantly gave Moriarty the security codes.
-
- ....
-
- "Why not just have single-person Holodecks? For interaction, the
- computer could just link them all together!"
-
- According to the TNG Tech Manual, there are four primary
- Holodecks and a number of personal ones. They could indeed be
- linked, but part of the fun of a Holodeck is the interaction with
- other people, knowing that they are real.
-
- ....
-
- "Why do people get dressed up before going to the Holodeck? Can't
- it provide the period costumes?"
-
- Yes. But they probably don't want to walk around the Enterprise
- naked. It also allows them to get "into character" before
- entering the simulation.
-
- ....
-
- "Wasn't there a Holodeck on the original Enterprise? I'm sure I
- remember...."
-
- No. I believe in one or more of The Animated Episodes, the
- recreation deck, with an environmental simulator, is presented.
- This is probably what most people remember, and also the
- inspiration for the Holodeck itself on TNG.
-
- Sources like "Mr. Scott's Guide to the Enterprise" mention
- similar things, including rooms with hologram projectors for the
- walls alone, but no canonical evidence exits.
-
-
- ----------------------------------------------------------------------
- * My personal scale of "canon" for the purposes of *Treknology*:
- Canonical: ST:TNG episodes
- ST:DS9 episodes
- Quasi-Canon: ST:TNG Technical Manual
- ST Chronology: The History of the Future
- ST:TNG Companion
- ST:TFS I-VI (+ any future films)
- Semi-Canon: ST:TOS episodes
- The Making of Star Trek
- Any *drawings* based on the episodes/
- films (eg, Starlog Tech Journal,
- Mr. Scott's Guide, etc)
- Non-Canon: Everything else, including:
- ST:TAS
- Books (incl. novelizations)
- Games (FASA, et. al.)
- Collectibles (toys, cards)
- Old Tech Manuals
- Rec.arts.startrek.tech posts
- ----------------------------------------------------------------------
-
- Hope you enjoyed it. :) Please send any questions, comments, or
- suggestions (heck, even flames) you may have to the address below.
-
- Joshua
- --
- | "Science constitutes the language through which alone we can adequately |
- | express the great facts of the natural world." - A. A. Lovelace |
- | jsbell@acs.ucalgary.ca Academic Computing Services, University of Calgary |
-
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