‪In "she saw him", it's clear there are two third persons because they're of different genders.

[seelefand@mastodon.green]

@johncarlosbaez also Scandinavian languages have a reflexive possessiv: in Danish, you would say: hun så sin hund (if it’s her own) vs hun så hendes hun (if it’s someone else’s).

Danes of older generations complain that younger speakers often do not use the reflexive possessives due to the influence of English.

[michaelc@scholar.social]

@johncarlosbaez Not your primary point, obviously, but Latin also has a feature like Russian. Sort of his-own or her-own distinct from some other his or hers.

[metaweta@mathstodon.xyz]

@johncarlosbaez If one wanted to make it especially clear, one could say, "She saw her own dog."

[culver33550336@mathstodon.xyz]

@johncarlosbaez I remember seeing a constructed language for dwarves that had a number of non-human features. One was a lack of pronouns, instead it had a half dozen words that worked as variables. You would mark the antecedent with a certain suffix, and then the chosen word would refer to only that noun for the rest of the conversation. It seemed like a reasonable system to avoid ambiguities like this one.

[menyku@mastodon.social]

@johncarlosbaez I see a dog in the image, clearly...

[bartoszmilewski@mathstodon.xyz]

@johncarlosbaez
I can confirm the Polish version:
- jej psa (accusative case of her dog)
- swojego psa (same but reflexive)

[pauliinalievonen@mementomori.social]

@johncarlosbaez In spoken Finnish, all but one of those sentences could be ”it saw it”. The one exception would be ”it saw itself”. Man, woman, dog, chair, doesn’t matter.

[johncarlosbaez@mathstodon.xyz]

@Pauliinalievonen - Neat! So the Finns can be very terse and ambiguous if they want. But what if they don't want? Can they use genders and say "he saw her?"

[johncarlosbaez@mathstodon.xyz]

@Culver33550336 - nice! I've heard it said that mathematicians have a highly developed ability to work with pronouns - like we can "let p be the nth prime number and q the (n+1)st; then q < 2p." The dwarves are working in that direction.

[johncarlosbaez@mathstodon.xyz]

@michaelc - Yeah! Over on Bluesky, Robert Low told me:

Latin too:

canem suum vidit (she saw her own dog) and canem eius vidit (she saw <some other person>'s dog).

[johncarlosbaez@mathstodon.xyz]

@seelefand - there might be some good things that Scandinavian languages could borrow from English, but the reflexive possessive is a feature English should borrow from those languages! If I tried, I would say something "she saw herselve's dog".

[michaelc@scholar.social]

@johncarlosbaez Yes! Very convenient.

[thebluewizard@masto.hackers.town]

@johncarlosbaez As a ASL (American Sign Language) signer, I can tell you ASL has a very powerful "pronoun" system, and one can easily specific which one is which using spatial deictic 'markers'. So I can easily say "We three go to a store" where "we" includes me and my friends next to me, using the "3" handshape. Or I can explicitly exclude my friends, instead mentioning other ones, with the same handshape, but move it differently. Practically infinite ways to do it!!!

[pauliinalievonen@mementomori.social]

@johncarlosbaez "He" and "her" are the same word, "hän", mostly used in written Finnish. So to be completely clear you have to use the persons name, or say "the woman" or "the man" or something like that anyway.

I thought of an example, imagine I was telling you about something I saw in the park. That might go something like this: "This morning in the park I saw this woman with a dog, and it, the woman, bought an icecream. Then it gave it to the dog to lick, but it ate the whole thing!

So as the story goes on I would use "it" more often because it's already clear who is doing what.