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[personal profile] gusl
Suppose you (B) and your friend (A) are expecting to meet a friend of theirs (D) who you've never met before. You're running a bit late, and just as you get there, you see someone (C) who is walking away, so must decide ASAP whether this is the person you're supposed to meet, so you can decide whether to yell. Are C and D the same person?



A can't see C.

If humans were digital creatures, B could instantly communicate C's image to A. Better yet, A could have instructed B on how to recognize D as effectively as A herself.

However, as a human, A and B must use English to tell each other these things. This is an awful solution! It doesn't bother me so much when machines are dumber than humans. It bothers me more when humans are dumber than machines.

(no subject)

Date: 2008-09-06 09:03 pm (UTC)
From: [identity profile] surrey-sucks.livejournal.com
Why is A standing where he/she is? Is A running late too? (That was a little ambiguous.)

(no subject)

Date: 2008-09-06 09:10 pm (UTC)
From: [identity profile] gustavolacerda.livejournal.com
just when I thought I had made a good cover story...

Just imagine that A is tired and taking advantage of B's wake.

(no subject)

Date: 2008-09-06 09:18 pm (UTC)
From: [identity profile] surrey-sucks.livejournal.com
You math/physics/computer people think much differently than I do!

(no subject)

Date: 2008-09-06 09:29 pm (UTC)
From: [identity profile] gustavolacerda.livejournal.com
what kind of person are you?

(no subject)

Date: 2008-09-06 09:33 pm (UTC)
From: [identity profile] surrey-sucks.livejournal.com
The total opposite.

I don't really know, but I prefer chemistry and biology.

I'm also the kind of person who over thinks things. Such as: do person A and person C have cell phone? And if so, why doesn't person A call his/her friend to tell him/her that you guys are late?
Edited Date: 2008-09-06 09:38 pm (UTC)

(no subject)

Date: 2008-09-06 09:35 pm (UTC)
From: [identity profile] 0436.livejournal.com
Gosh, I wouldn't use "dumb".
Gosh, I can't ever relate with you.

(no subject)

Date: 2008-09-06 09:50 pm (UTC)
From: [identity profile] gustavolacerda.livejournal.com
Interesting. This kind of overthinking may be a cause and/or consequence of you not being a math person. Mathematical thinking involves abstracting away from such details.

Ironically, the intended intepretation of cover stories / word-problems often involves some subjectivity, some (possibly culturally-relative) common-sense. To take an example from combinatorics: "There are 10 men, 5 white ties, 5 black ties. How many ways are there of matching men to ties?". Now, replace "ties" with "women", and the interpretation (and answer) will change: unlike ties, women are not exchangeable.

(no subject)

Date: 2008-09-06 09:56 pm (UTC)
From: [identity profile] gustavolacerda.livejournal.com
I use "dumb" as a technical term. Do you have a better term?

(no subject)

Date: 2008-09-06 09:57 pm (UTC)
From: [identity profile] the-locster.livejournal.com
Better yet, A could have instructed B on how to recognize D as effectively as A herself.

What you mean like showing B a picture of D beforehand? :)

(no subject)

Date: 2008-09-06 09:59 pm (UTC)
From: [identity profile] gustavolacerda.livejournal.com
Note also: this is presupposing that everyone is heterosexual and all M-F matches are possible, etc, etc. I did warn about cultural relativity.

(no subject)

Date: 2008-09-06 10:06 pm (UTC)
From: [identity profile] surrey-sucks.livejournal.com
this is presupposing that everyone is heterosexual and all M-F matches are possible, etc, etc.

See, these are the types of things I would start thinking about.

I know you meant the original problem to be answered mathematically, but I lack the ability to think that way; I am just not mathematical at all. Because I am deficient in thinking mathematically, I start trying to find flaws in the question asked, thus annoying everyone :) And that is the kind of person I am!

(no subject)

Date: 2008-09-06 10:10 pm (UTC)
From: [identity profile] http://users.livejournal.com/_tove/
If humans were digital creatures that didn't have some of the dumb skills we have, even A might have a hard time recognizing C, especially since C is facing away, and probably wearing different clothing and lit differently than the last time A and C interacted.

(no subject)

Date: 2008-09-06 10:22 pm (UTC)
From: [identity profile] 0436.livejournal.com
High five.

(no subject)

Date: 2008-09-06 10:25 pm (UTC)
From: [identity profile] en-ki.livejournal.com
If I were B, I would yell "hey, D!" and if C were not D, C would ignore me or would be somewhat bewildered. In the latter case, A would then show up and help appropriately.

As [livejournal.com profile] _tove seems to be saying, humans' tendency to abstract (to the point of not being able to communicate raw data efficiently) is a tradeoff more useful to us than not. Sure, I'd like to be able to freely store and copy and alter and communicate arbitrary subsets of my sensorium—sign me up as soon as the devices come out (cell phone cams anyone?)—and that's why I got interested in copyright law in the first place.

I wonder if there is a quickly-teachable Soundex for faces.
Edited Date: 2008-09-06 10:46 pm (UTC)

(no subject)

Date: 2008-09-07 07:23 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
ooh... you mean like this??

(no subject)

Date: 2008-09-07 11:28 pm (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
B and D have seen each others' Facebook profiles.
B phones/shouts to A to call D.
A gave D's number to B in case B arrived first - B calls D.
B shouts, "Hey D!" Worst case, it's not D: "Sorry, wrong person!" Then there's a chance B and C have a chat.
...

(no subject)

Date: 2008-09-07 11:29 pm (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
Do you know about verbal overshadowing? Could be a nice experimental setup to test you verbal code for facial features. Verbal overshadowing is moderated by individual differences in verbal ability - something to bear in mind...

(no subject)

Date: 2008-09-07 11:30 pm (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
"Interesting. This kind of overthinking may be a cause and/or consequence of you not being a math person. Mathematical thinking involves abstracting away from such details."

Does mathematical THINKING involve this, or the intended end result?

(no subject)

Date: 2008-09-08 12:18 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
Cool. The process of giving description in English labels is essentially lossy compression: there's no going back. By communicating to B, A is impairing his own recognition.

Re: "moderated", is high verbal ability correlated with a stronger overshadowing effect?

(no subject)

Date: 2008-09-08 12:27 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
The point is that the information cannot be directly communicated from A's brain to B's brain. Not portable.

Currently, this is because of the channel: English is a terrible format for images.

But even if we solved that by adding some sort of direct brain-to-brain channel, there might be coding compatibility issues. Computers have standard formats (like GIF), but humans might not. However I believe they've shown that the neural codes for low-level vision (V1, maybe V2) are pretty much the same for everyone. [Add caveats/qualifiers/provisos here]

(no subject)

Date: 2008-09-08 07:55 am (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
"By communicating to B, A is impairing his own recognition."

Not quite :-) Unless A has just recently seen D's face...

Higher verbal ability => less of a detrimental effect of verbalising the facial description on facial recognition.

(no subject)

Date: 2008-09-08 08:01 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
hypothesis:

higher verbal ability => more precise language => more faithful (i.e. less lossy) compression => less of a detrimental effect of verbalising the facial description on facial recognition.

(no subject)

Date: 2008-09-08 08:14 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
btw, have we met? how did you find my blog?

(no subject)

Date: 2008-09-08 08:33 am (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
Yes, that was their idea.

(no subject)

Date: 2008-09-08 08:35 am (UTC)
From: [identity profile] parentheses.wordpress.com (from livejournal.com)
Yes we have (figuraleffect.googlepages.com)

(no subject)

Date: 2008-09-10 04:49 am (UTC)
From: [identity profile] easwaran.livejournal.com
I don't think it's because English is the channel. We certainly don't use verbal descriptions to recognize people we know, but I think we also don't use an image to recognize people we know. That is, there are lots of people I would be able to recognize instantly, but can't necessarily visualize what they look like well enough even to know if they have blond or brown hair, or how tall they are. The bigger problem might be that our recognition abilities are completely outside of our conscious abilities.

(no subject)

Date: 2008-09-13 08:27 am (UTC)
From: [identity profile] gustavolacerda.livejournal.com
dude, why so many blogs / identities?

(no subject)

Date: 2008-09-13 12:25 pm (UTC)
From: [identity profile] figuraleffect.wordpress.com (from livejournal.com)
:-) I'm just down to two blogs and one website now!

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