lettered: (Default)
It's Lion Turtles all the way down ([personal profile] lettered) wrote2019-02-06 08:55 pm

Recognizing things

What defines an object for you? And is there a word for the traits you define it by, which might be different than the traits other people use?

  • My mom says my purse is just like my old purse. I think they are completely different, because of the shape, strap, and hardware. She doesn’t think the shape and strap are that different. I realized the things that matter to me about the shape and strap are different, thus making it feel like a completely different object. The reason it matters has to do with how I use the purse, but I feel this isn’t an issue of me comparing function while she’s comparing form—I’m sure she’s considering function too, but because she uses it differently, she doesn’t see the same things I do (and I don’t see the things she does).

  • This made me think about casting in movies, when a child and a blood-parent have to be cast, or a young-version and an old-version have to be cast. You can usually see which features were selected by the casting director to “carry” over into the descendent/parent or younger/older!versions—but it’s not always what you personally think makes someone look like them.

  • For my work I had to do some research on how the brain recognizes objects. When you encounter an object, you notice various aspects—it’s shape, color, size, texture, etc. When you encounter like objects (called the same thing) several more times, your brain creates a category that links these things. When you see a new object and enough criteria are met, you recognize the object—therefore, you can look at a car you have never seen before and recognize it is a car. But if you encountered a banana that was blue and a pyramid shape, you would probably not recognize it as a banana, even if it tasted, felt, and smelled the same.

  • Think about this enough, and you’re back at Plato’s forms, in which there is a form that is Cat. You define cats as furry animals with four legs and pointy ears, but a hairless cat is still a cat, and a 3-legged cat is still a cat, and in fact a hairless, legless, earless cat is still a cat. They have in common their catness, because they reflect some essential Cat form.

  • And after thinking about that you arrive at the Ship of Thesus, in which a famous ship sits in a museum, but over time pieces of it rot or break and are therefore replace. Over centuries every single part of the ship is replaced; is it still the Ship of Thesus?


Tl;dr, my mom and I are never going to agree about this purse.
flamebyrd: (Default)

[personal profile] flamebyrd 2019-02-07 05:13 am (UTC)(link)
My spouse likes to reference his (fictional) grandfather's hammer, of which the handle and the head have been replaced multiple times, on separate occasions, but it's still his grandfather's hammer!

My tendency to catalogue characters by hairstyle or personality instead of facial features has occasionally led to confusion when I say two characters are alike, when to someone with better facial recognition they look completely different.

(Anonymous) 2019-02-07 05:28 am (UTC)(link)
Yeah! Facial recognition is such an interesting part of it. We had a whole thing in our exhibit about it, because of its prevalence/importance to daily life.

I am actually pretty good at facial recognition, but have a weird blindness when it comes to glasses and facial hair. I honestly can't remember whether most people I know have glasses or facial hair, and sometimes can't recognize what's different if they remove either. Sometimes I'll even say something like "did you get a haircut?" Which is funny, because I recognize haircuts right away.
vaysh: (Default)

[personal profile] vaysh 2019-02-07 04:29 pm (UTC)(link)
This reminds me of what I heard about Shinto shrines in Japan (this is just hearsay, I never researched this). The idea is that the shrines have always been the same for over thousand years. The buildings are made of wood, so of course wood rots and needs replacing. There are all kinds of artisans who are trained in particular to create the ornaments and architecture that needs replacing at the temples – temple carpenters etc. But they always replace things in the exact same shape as it was before. Thus, they say, these temples have existed in this very form for over thousand years.

The European understanding of preservation is different: we want the exact same thing. Not a thing that was replicated in the exact same likeness.
musyc: Silver flute resting diagonally across sheet music (Default)

[personal profile] musyc 2019-02-07 05:37 pm (UTC)(link)
Terry Pratchett has a bit in one of his books, a dwarf talking about "grandfather's axe" (I think, it's been a while since I read that book). The handle has been replaced, the blade has been replaced. But it's still his grandfather's axe. I think about that from time to time - the line between restoration and replacement, and when something becomes entirely "new".
my_daroga: ambiguous? (batman)

[personal profile] my_daroga 2019-02-07 09:49 pm (UTC)(link)
I've always heard that last one as George Washington's axe.

I am curious too about why your mom, on some level, wants the purse to be the same. It's an argument she feels compelled to make, I mean, and that's interesting in and of itself.
lokifan: black Converse against a black background (Default)

[personal profile] lokifan 2019-02-09 03:50 pm (UTC)(link)
Very interesting. Reminds me of something I read years ago about how we categorise using defaults - as you say, this sort of Plato's Forms thing - and how we (in studies) apparently think a penguin is more like a robin than a robin is like a penguin, because the robin is closer to the centre of Bird-ness so it's more the default.

Feel free to ask for clarification, btw, I can't think of a better way to explain it rn but I know that wasn't very clear...
Edited 2019-02-09 15:51 (UTC)
sugarplumsenpai: (Default)

[personal profile] sugarplumsenpai 2019-02-09 06:42 pm (UTC)(link)
Such an interesting post, thank you. I find it so interesting and important to be reminded of this every now and then. To recall something might have a name but that doesn't mean everybody would call it the same or describe a thing the same way. Some people might not ever have come across a certain object and give it its own name. Something might have happened to that object and changed it. And sometimes we intentionally use it in a way that isn't the object's purpose.

I often come across this in my job too when people speak about colour. Perception and personal cognition can differ so greatly here too, fact aside that lots of people have only one word for all shades of blue (which is just blue for them). The same with red, and some say magenta is pink and violet is pink and salmon is pink too. Some might even find a yellow isn't yellow but lime or orange, depending on the hue. Or even depending on their monitor calibration. It leads to lots of confusion, and sometimes brilliantly comical situations too. Like a few years ago when someone wanted to sell a dress on the internet. They took a photograph and posted it. Some people perceived the colour as white and gold, some as blue and black, depending both on how their monitors showed it and also by sole personal perception differences when they looked at the same screen. It always invites me to philosophize afterwards. Is a cup still blue if a person perceives it as green or simply calls it that way? And how do I apply this to writing a story, maybe even with multiple characters speaking of the same cup, some saying it's blue, some insisting it's green? And what about a colour-blind character? And so on.

And the axe mention reminds me of Aragorn's sword. It's his ancestor's sword, of course, but is it still his ancestor's sword after the Elves reforged it? Or is it a new one? Or perhaps both? :)
sugarplumsenpai: (Default)

[personal profile] sugarplumsenpai 2019-02-11 05:09 pm (UTC)(link)
Oh, so fascinating with the language aspect. I didn't know about this so far, though it does make sense. :)
lobelia321: (Default)

[personal profile] lobelia321 2019-02-13 11:06 pm (UTC)(link)
Ah, this (to me) chimes in with what you explore in your H/D fics. When are we the same and when are we different; how does our person inhere in our bodies and appearance; what happens when I polyjuice myself into the Argo?