Lady, EVOLVED 
is an animated gif an image?
why is an animated gif an image?
is an animated GIF, where each frame is a page of text, an image?
ok, well, is a JPEG of a page of text an image?
ok well, if you print out a JPEG of a page of text, surely that is still an image then?
@Lady indeed, a jpeg of a page of text is an image, but a printout of that jpeg is text. My reasoning: On a computer, plaintext can be copy-pasted and have assistive tools used on it, therefore an image of text is not the same as text. But you can't do that with text on paper, so both a printout of plaintext and a printout of a jpeg of a page of text is text.
@unspeakablehorror wouldn’t the fact that you can’t copy-paste text on paper imply that it isn’t text, not that it is, if that is part of your definition of “text”?
@Lady No, because my definition of text depends on the context. On a computer, that is part of my definition of text, but in a non-computer environment it is not.
@unspeakablehorror but is not(computer‐text) not still not(computer)‐text? or do you think there is something fundamentally different between printing to an e‐ink screen and printing to paper?
@unspeakablehorror sure, but it seems like a lot of privileging of “computer” to me. what makes computers so special?
@unspeakablehorror (also, for the record, an iphone can select and copy text from a printed document (or a JPEG (or a rendering of a JPEG on a screen)), so i question your context delineation. people aren’t without computers just because they are dealing with physical entities. we live in an age of cyborgs)
@Lady Yes, computers that aren't iphones can sometimes do that as well, but image-to-text doesn't have perfect accuracy anymore than text-to-speech does. So from an accessibility context, that is absolutely not functionally the same. That action also cannot be considered the same as copy-pasting from plaintext to plaintext in terms of fidelity. So on both counts, it means the source document is definitionally not a text document with respect to the destination.
@Lady I don't see this as privileging computers at all. In fact, I would see it as privileging a context if the definition was instead static and only addressed one context or the other. I think this should apply in non-computer contexts as well. For example, on Earth, the definition of up is defined with respect to Earth's gravity, but in space I define it differently as Earth's gravity is not as relevant in that context.
@unspeakablehorror but “on computer” vs “off computer” is a significant part of your definition of context. how is that not privileging “computer” as a category?
@unspeakablehorror there are websites which swap out letters for other letters and use special fonts as a form of DRM to prevent people from copy‐pasting from them. there are websites which don’t let people select text at all. there are PDFs whose underlying text that you can select and copy is OCR’d and buggy. there are PDFs with no underlying text at all.
i don’t have any problem classifying all of these things as text documents, because my definition of “text” doesn’t require any particular technological affordance or computer interface. it doesn’t require that a thing be on a computer, or off a computer. but you are defining “text”, in a computer context, based on what computers are able to do with a thing. this is a definite privileging of computers, and technological affordances, as the basis of your ontology. and it is the reason why you need to then come up with other definitions for other contexts where those technological affordances do not apply.
@Lady Sure, there are websites like that and pdfs like that.I don't consider those kinds of websites and pdfs to contain text.They are 'documents', but not text.
I think words should have different definitions depending on the context.Sometimes dictionary writers even think this, as they give multiple definitions to some words.
I understand that your definition of text differs from mine, but I would argue that you are simply privileging different things from me in constructing that definition
@Lady If your definition of privileging simply means 'affecting the definition of words', then sure, I am privileging computers in this context. But if by privileging you mean 'treating in a way I don't treat other differing contexts', then I disagree.
@unspeakablehorror by “privileging” i mean, kind of, both: you are, for example, treating the computer affordance of copying and pasting as distinctive, but not stating, for example (to my knowledge), that text carved into stone or written on a whiteboard is not text, because you cannot cut it out and paste it onto a piece of paper (the way you can a newspaper clipping). nor do you merit things as text which a human can manually trace in a paint program, even tho that is a form of copying.
and certainly, you privelege assistive technologies being able to read a thing over humans being able to read it in your definition, because you find the former to be distinctive, and the latter not to be. you assign weight to computer processes which you do not consider significant as human processes. that is what i mean by “privileging”.
@Lady "and certainly, you privilege assistive technologies being able to read a thing over humans being able to read it"
Is the purpose of the assistive technology to help computers read text, or to help humans read it? If I were privileging the computers themselves over that of humans in that context, I would be saying things like 'Python is a language when on a computer but English isn't'. But that's not what I'm saying. What I'm privileging are significant functional differences for humans.
@Lady "but not stating, for example (to my knowledge), that text carved into stone or written on a whiteboard is not text, because you cannot cut it out and paste it onto a piece of paper (the way you can a newspaper clipping)."
You are correct that I am not making these kinds of distinctions, but I would not necessarily consider it invalid for someone to do so. Perhaps someone considers text on a whiteboard text only if it can be erased and added with ease. I think that's valid.
@Lady "nor do you merit things as text which a human can manually trace in a paint program, even tho that is a form of copying."
Yes, my definition considers this distinct from copy-pasting ability because of the order of magnitude of difference in difficulty involved in doing this.
@Lady Merriam-Webster agrees with me (though I would've phrased this definition differently):
5b. matter chiefly in the form of words or symbols that is treated as data for processing by computerized equipment
| text-editing software
@Lady Yes and no. They both have a partial overlap of definition in terms of being symbols with the ability to record and impart meaning to people, but the functional capabilities are part of the definition of text to me, and those change depending on whether text is on the computer or not. I'm viewing this in the context of a more formalized version of coercion (https://socialsci.libretexts.org/Bookshelves/Linguistics/Analyzing_Meaning_-_An_Introduction_to_Semantics_and_Pragmatics_(Kroeger)/05%3A_Word_Senses/5.04%3A_Context-dependent_extensions_of_meaning) in that I think of the formal definition as literally changing depending on the context.