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From: Paul S Person <psperson@old.netcom.invalid>
Newsgroups: rec.arts.comics.strips,rec.arts.sf.written
Subject: Re: xkcd: CrowdStrike
Date: Wed, 07 Aug 2024 08:46:58 -0700
Organization: A noiseless patient Spider
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On Wed, 7 Aug 2024 09:22:33 +1200, Your Name <YourName@YourISP.com>
wrote:

>On 2024-08-06 16:18:38 +0000, Paul S Person said:
>> On Tue, 6 Aug 2024 13:27:49 +1200, Your Name <YourName@YourISP.com>
>> wrote:
>>> On 2024-08-05 16:19:41 +0000, Paul S Person said:
>>>> On Mon, 5 Aug 2024 09:02:17 +1200, Your Name <YourName@YourISP.com>
>>>> wrote:
>>>>> On 2024-08-04 15:54:51 +0000, Paul S Person said:
>>>>>> On Sun, 4 Aug 2024 18:14:35 +1200, Your Name =
<YourName@YourISP.com>
>>>>>> wrote:
>>>>>>> On 2024-08-04 03:14:42 +0000, Lynn McGuire said:
>>> <snip>
>>>>>=20
>>>>> Much of the blame also should go to the moron Elon Muskrat, who>>>=20
>>>>> keeps>telling everyone it is "self-driving" when it is definitely=20
>>>>> NOT!>>> Even>his own Tesla emplyees tell him it's crap. He also =
insists=20
>>>>> that>>> the>Tesla cars only use cameras while every other company =
is=20
>>>>> using>>> things>like lidar too (not that it makes their =
self-driving=20
>>>>> any better>>> either).
>>>>=20
>>>> The same could be said of using "3D" for "stereoscopy" when they are
>>>> clearly distinguishable.
>>>> I realize that the terminology here is very confused: I am using =
"3D"
>>>> here to refer to what we (well, most of us) see with our own eyes =
when
>>>> we look around as opposed to stereoscopy and also to 3D animation
>>>> which produces some fine effects but is not stereoscopy. My favorite
>>>> illustration of the difference is this:
>>>>=20
>>>> if you watch a stereoscopic film in which, say, a paddle-ball ball =
is
>>>> sent directly into your face "out of the screen", it will be aimed =
at
>>>> your face no matter where you are sitting
>>>>=20
>>>> if a /real/ paddle-ball ball were sent out to the audience, some =
would
>>>> see it coming at them, others along side them, and some above (or,
>>>> when balconies existed, below) them -- you would see different =
things
>>>> depending on where you are sitting
>>>=20
>>> That is partly done on purpose to make *you* feel you're in the=20
>>> film,>rather than the cinema, but of course technical limitations =
play=20
>>> the>biggest part ... currently.
>>>=20
>>> No doubt some cinema will use AR/VR-style headsets to give the=20
>>> audience>different viewpoints depending on where they are sitting.=20
>>> Could be good>for those watching something like a sports event or =
music=20
>>> concert, but>it doesn't really work for a normal movie since it is=20
>>> irrelevant where>you are in relation to others watching.
>>>=20
>>>=20
>>>=20
>>>> Another difference, of course, is that just seeing the world in 3D
>>>> doesn't make most people throw up. Sterescopic films are known the =
do
>>>> that. Although, to be some Cinerama/Cinemiracle films did as well, =
at
>>>> least when projected so that all you saw was the film (no screen
>>>> boundaries visible).
>>>=20
>>> I can only play 3D computer games for a few minutes before I=20
>>> start>getting motion sick. If I continue to play, I end up with an=20
>>> extremely>bad headache and bad nausea. Even just watching gameplay=20
>>> trailers>starts making me feeling sick too.
>>>=20
>>> Same if I try to read books or maps (as a passenger of course) in a =
moving car.
>>>=20
>>> I've never bothered trying to watch a 3D movie.
>>=20
>> Neither have I ... in the sense I suspect you intended: as a 3D movie.
>>=20
>> I've seen (and own) several that were released as "3D" movies.
>> /Creature from the Black Lagoon/ comes with a trailer proudly
>> proclaiming it as the first 3D movie to be filmed underwater. /Dial
>> "M" for Murder/ is (AFAIK) Hitchcock's one and only forey into"3D"=20
>> (that's why the image has the woman's hand pointing at you: it no
>> doubt extends from the screen in "3D"). /Coraline/ is not only "3D";
>> the DVD comes with a packet of "red/blue" paper eyeglasses and has two
>> sides: one "3D" and the other the side I watch. And of course
>> Argento's /Dracula/ and /Harry Potter and the Deathly Hallows Part 2/
>> are "3D". And there are many many others.
>>=20
>> But I watch none of them in 3D. I have my own glasses and don't need a
>> second pair to fix the blurriness of the film. (I am relying here on a
>> scene in /The A-Team/ which depicts what a "3D" film looks like
>> without the glasses.)
>>=20
>> /Coraline/ is interesting because it points out the /real/ purpose of
>> "home 3D": to make money by requiring a new, special BD player and a
>> new, special TV set -- neither of which was necessary, just a
>> properly-prepared disk. But that's just how it goes nowadays.
>
>Our main TV does have a setting for 3D (despite being too small a=20
>screen size for it to be remotely useful), but I've never even bothered=20
>to look at what it does, let alone use it. It probably uses some=20
>gimmickry to turn normal 2D shows / movies into pseudo-3D, which would=20
>be even worse than those filmed as 3D.

Or it allows you to feed it a "3D" signal and have it display as "2D"
(I prefer "flat" for this myself). The manual might tell you [1].

An early review in /Consumer Reports/ when "3D" TVs first came out
talked about a system where the two images were interlaced on the same
screen. Which, of course, halves the vertical resolution. I don't
recall them mentioning glasses, and, since this reads a lot like
interlacing, perhaps not.

The review had something to say about the glasses that came with most
of those sets -- the ones costing $150 or so 24 years or so ago,
exactly one of which came with each set. In addition to the cost and
the need to buy more if you wanted to share the experience, they noted
that the little flaps that moved up and down to control which eye
could see the screen sometimes froze, producing imperfections.

This was /not/, apparently, what was used in theaters; there,
polarized glasses were used. But those cost a lot less than the
"flicker glasses" (my name, I don't recall what the official name was)
and would work with any "3D" TV, not just the one it came with. So
those were clearly out as far as home use was concerned.

Add to those the red/green glasses DVD version, and we have no less
than /3/ ways to see "3D" movies -- and the only one that is the same
in the home as it is in the theater is the red/green version from the
50s [2]. This is progress?

[1] Or not. My current TV (a digital Toshiba from 20+ years ago with
one tube: the picture tube) has a "DTV" option and the manual defines
it as "Digital TV" but says nothing else about it, so I have no idea
at all what it is supposed to connect to despite reading the manual.

[2] Unless, of course, current "3D" TVs are using polarized glasses.
Or other changes have occurred that I am happily ignorant of.
--=20
"Here lies the Tuscan poet Aretino,
Who evil spoke of everyone but God,
Giving as his excuse, 'I never knew him.'"