move some decent pages over to misc folder

3 files changed, 0 insertions, 165 deletions

diff --git a/tmp/SCUBA.page b/tmp/SCUBA.page
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-format: rst
-categories: 
-toc: no
-...
-
-============
-SCUBA Diving
-============
----------------------------------------------
-Self Contained Underwater Breathing Apparatus
----------------------------------------------
-
-SCUBA stands for "Self-Contained Underwater Breathing Apparatus".
-One of the primary organization regulating recreational SCUBA diving is 
-PADI (the Professional Association of Diving Instructors). 
-
-Equipment
----------
-
-:BCD:   The buoyancy control device is basically an inflatable live vest 
-        that you can inflate using the regulator (or by mouth) to control
-        your buoyancy. Your buoyancy changes as you use up air (tank gets
-        lighter for same volume displaced), inhale/exhale, swim in water
-        of different temperature or salinity, or change depth: increased
-        pressure compresses any flexible air pockets, including the BCD
-        itself, neoprene foam, or a dry-suit.
-        Most BCDs have their own pressure hoses coming from the first stage
-        regulator that supply air.
-        Sometimes there is only one vent valve, which has to be at the
-        highest orientation or air will not vent out of the bladders.
-:Tank:  Most tanks are made of steel or aluminum and can store compressed
-        air of up to 3000psi. They are stored at pressure to prevent moisture
-        from leaking in. There is a valve built into the tank itself that
-        usually gets taken apart and repaired every two years. Tanks
-        can last for decades even with heavy use; they are pressure tested
-        for fatigue and leaks.
-:Regulator: The first-stage regulator is connected to the tank and steps
-            the pressure down to about 250psi above the surrounding/ambient
-            pressure. Hoses carry air at this mid-level pressure to the second
-            stage regulator/mouthpiece, which steps the pressure down to
-            about what is in your lungs. Depending on the regulator they can
-            be stiff (you have to suck a bit to get air, but then it rushes
-            in with force) or very natural feeling (air comes very smoothly
-            on inhalation and doesn't press into your lungs).
-:Alternate: These days almost everybody carries a second regulator mouthpiece
-            for emergencies. These are always on and ready to breath from,
-            but usually stiffer so they don't free-flow as often.
-:Dive Computer:
-        A dive computer monitors time and depth to give you an accurate picture
-        of how much excess nitrogen is in a diver's bloodstream. By 
-        continuously integrating they usually "give more time at depth" than
-        hand calculations using tables (which err towards safety).
-:Dry Suit:  A dry suit is a sealed and air tight, keeping the diver's skin dry.
-            Extra insulation is needed to give warmth underneath. Some dry
-            suits are made of compressed neoprene.
-            A dry suit has to be constantly adjusted with tank air just like
-            the BCD to maintain inflation and buoyancy.
-:Wet Suit:  Wet suits work on the principle of holding water against the skin:
-            a diver's body warms this water and stays cozy as long as water
-            flow is restricted enough. Even little bit too much flow through
-            wrist or ankle openings can be very cold.
-        
-
-Depths
-------
-A PADI Open Water Diving course gives a recommended limit of 20m/60ft.
-A "deep dive adventure course" gives a recommended limit of 30m/100ft,
-and additional experience gives a limit of 40m/130ft.
-
-With careful decompression stops and enriched compressed air (higher oxygen
-content) it's possible to reach depths of hundreds of meters. Sometimes
-commercial divers will dive for many hours using surface supplied air,
-then live at the surface in a compression chamber overnight between dives
-to stay at the same pressure [*]_.
-
-History
--------
-I'm pretty sure `Jacques Cousteau`_ invented the aqualung, which is the basis
-for modern diving, but I'll have to check.
-
-.. _Jacques Cousteau: /k/jacquescousteau/
-
-Flying
-------
-After a regular no-decompression dive, wait at least 12 
-hours before flying (or going to high altitude, eg over 300m).
-
-.. [*] Need a citation, heard this word of mouth
diff --git a/tmp/artists.page b/tmp/artists.page
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-Artists
-=======
-
-* Kay Sage (1898-1963), American Surrealist Painter
-* Yves Tanguy (1900-1955), French Surrealist Painter
-* Hans Bellmer (1902-1975), French. "Die Puppe" series (dolls)
-* Francis Picabia (1879-1953) French Painter
diff --git a/tmp/newcomb-paradox.page b/tmp/newcomb-paradox.page
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-...
-==================
-Newcomb's Dialemma
-==================
-
-Newcomb's paradox was thought up by a researcher named Newcomb; it was first
-explored and written up by Robert Nozick in the 1969 paper 
-"Newcomb's Problem and Two principles of Choice". 
-
-The Situation
--------------
-As narrated by an all knowing "predictor"::
-
-    I am going to give you a choice. It is important to know that I really
-    pretty much know what you are going to do. I have been watching their whole
-    life and am additionally an immortal being; i've been doing this a long
-    time and always guess correctly. It's also important to know that I am
-    unbiased and don't care which decision you make, I have nothing to gain
-    either way.
-
-    Here are two boxes: a large and a small. The small has a 10 shekel coin
-    in it (show everybody). The large one may or may not have a thousand
-    shekels in it; you don't know. Your choice is to either take only the
-    large box or to take both the large and small boxes. The twist is that
-    I already knew which decision you will make and decided whether or not
-    to put the $1000 in the large box or not based on that knowledge.
-    If I knew you would "two box", then I left the large box empty. If I knew
-    you would "one box" then I filled it. 
-
-Dominance Mindset
------------------
-Regardless of what decision was made previously, and whether or not there
-is anything in the large box, the person is better off taking both boxes;
-either they will get just $10 (better than none) or $1010 (better
-than $1000). So two-box.
-
-Trusting Mindset
-----------------
-The predictor is pretty much always right so we can just ignore the 
-possibility that they are wrong. In this case, choosing to one-box
-implies that the Predictor knew you would and you get $1000; 
-choosing to two-box implies that the predictor knew you would and you
-only get $10.
-
-The predictor doesn't even have to be perfectly accurate; say they are
-90%:
-If you one-box, your expected value is $900.
-If you two-box, your expected value is $110.
-
-Discussion
-----------
-It's disputed whether this is a paradox, and there are many deeper arguments
-that I don't have time to go into here. Ultimately, I am a one-boxer 
-though this is something of a minority position.
-
-Afterword
----------
-The person who taught me this paradox, Professor Augustin Rayo, a
-two-boxer, then had this to add. He was talking with his one-boxing friend
-and accused her of letting irrationality undermine her logic: she is so
-optimistic that if a statement S is unprovable, but it would be nicer if S
-was true than false, then she pretens that S is proven. So basically, even
-though there is no rationalization, she will accept a statement "just
-because it would be nice", and this isn't how logic works. To which she
-replied "but wouldn't it be nice if it was?".
-