You'd be surprised. People discern things of value from a one-time viewing of another person constantly. It's evolutionary wiring. From a glance, people can tell whether they others are rich or poor or middle class, their power status within a situation (e.g. a social gathering), their sexual orientation (studies show the gaydar exists), whether they're a threat or crazy or rapey or neurodiverse or meek and many other things, whether they're lazy or dilligent, and lots of other things.
>Sometimes a cigar is just a cigar, and sometimes, as George Carlin pointed out, it's a big fat brown dick.
What black and white thinkers miss is this doesn't have to be accurate all the time to exist and be usable. Just a lot more often than random chance.
And it has nothing to do with the comical Holmes "he had a scratch mark on his phone, so he must be alcoholic" level inferences: https://www.youtube.com/watch?v=eKQOk5UlQSc
You're conflating actual value with perceived value. It's well established that perceptions matter and people make decisions based on this all the time.
> The whole Julia Roberts trope resonates exactly because it happens in real life.
No, it resonates because it's a feel good story. I'm sure it happens, but most of the time signaling is perfectly accurate. If you don't believe me, exchange clothes with a homeless person and try to go shopping on Rodeo Drive.
I remember the days when you were expected to wear a suit on a jet, even the kids. These days, even the first class travelers wear track shorts. I kinda wish the airlines would have a dress code.
I'd take a code of conduct before the dress code. Though, appropriately enough, I suppose the latter signals the former
There's been pressure on the D Language Foundation to have a CoC. I've consistently refused one. The only thing I demand is "professional conduct". Sometimes people ask me what professional conduct is. I reply with:
1. ask your mother
2. failing that, I recommend Emily Post's book on Business Etiquette.
And an amazing thing happened. Everyone in the D forums behaves professionally. Every once in a while someone new will test this, their posts get deleted, and then they leave or behave professionally.
What? Why? Are you really that bothered by other people wearing stuff that you wouldn't personally want to wear? I can't even imagine going through life with strong feelings about how other people should dress; it legitimately sounds exhausting.
When I'd pick up my date, and she had obviously spent a lot of time on her appearance, it'd make me feel like a million bucks.
The goal is not to discern anything about a particular person from a one-time viewing of them, the goal is to discern something about a person a sufficiently high percentage of the time. Hence the evolutionary utility of using prior probabilities.
As history, and probably many people’s personal experiences, have shown, this trait also has drawbacks.