Science and Technology Quiz 3

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The only place I can remember seeing 'endian' was in something swiftian, so I'm guessing it comes from there, and has something to do with which end you start ordering the bytes from.
 
I'll give it to you then sanabas.

It comes from the war in Gulliver's travels which began because of an argument over which end to open a boiled egg, the big endians vs. the little endians.
 
Anyone wanna take the question? It's almost 72 hours.
 
Picture a standard conference room with a projector and one of those slidy projector screens that can be unrolled. When the projector is off and the screen down it is a slight off white colour. The projector is then plugged into a laptop and turned on. As the laptop is booting the standard windows booting screen is projected, causing the windows logo to appear on a black baground.

How does the projector project black?
 
That was quick. Anyway, I guess...destructive interference?
 
As in "A" is the same color as "B"...
 

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Looks like that was far too easy.
Rather than just letting perfection take it, can someone explain briefly why it is that the brain sees it as darker?
 
is it because the fact that white and black are complementary colors and the brain interprets them as such causing the brain to see them as farther apart then they are?

(If I'm right, how do heuristics work?)
 
Not really. Basicly, the amount (and color composition) of ambient light in a situation varies tremendously. Our eyes have to look at stuff on high noon in direct sunlight, various amounts of shade, twilight and at night. If we only counted the type of light given off by an object, the object would change color by simple dimming of lights. We track colors by looking at how much light comes off an object compared to the total light of the area. A projector can show black on a "white" screen because compared to all the bright light around the black spot, there's little light.
 
Perfection pretty much has it.
How does the brain do this though?

Interestingly, the cones and rods in your eyes that detect the light send a signal to the brain depending not just on how much light they detect, but how much light nearby one's do to. If there are a whole lot of cones in lots of light next to each other then they'll all fire off a moderate signal. However if there are two cones next to each other, one in the dark and one in light than these will fire off much more strongly. Contrast is actualy analysed in the eye itself and not in the brain.

Perfection, your go.
 
how does heuristics work? and who invented a practical invention machine (that uses heuristics)
 
Heuristics is the science of learning, IIRC. A heuristics invention machine? Would that be like an expert AI system that learns what people want invented? Like an autonomous CAD program that say designs a house, but takes user feedback to iteratively improve the house design?
 
Heuristics to me means assigning a value to a partial solution to a problem so that more promising paths can be taken before less promising ones. The A* algorithm being a classic example although heuristics are used extensively in AI programming (was the AI players proposed golf shot any good? etc.).

The only invention machine I can think of that uses heuristics is that automated theorem prover program which does loads of trial and error deductions which are filtered by the user to get more interesting lines of deduction. Don't know who invented it though.
 
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