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Humanoid robots show rapid advances as they race past humans in Beijing half-marathon
(www.theguardian.com)
This is a most excellent place for technology news and articles.
That's never going to happen the way you imagine. AI can't make decisions it wasn't trained for, and delivering mail in the real world isn't as simple as you think.
Unless you forced everyone to install standardized mailboxes and accepted that important mail won't be delivered to people if their mailbox looks different, got damaged, or is covered in snow.
But assuming it did work, who would profit from AI mail robots?
The people would get worse service, without a human connection anymore.
The postal workers would all be fired.
And as soon as the entire system relies on AI robots, the company leasing them out to the government would increase prices to at least what it cost before, since they've established a monopoly impossible to enter for any competition.
AI (or what we call AI currently) is definitely capable of making decision it wasn't trained for, it's the whole reason why LLM are so effective, they learned enough patterns about how humans think and react, that they can apply it to other situations.
Now, if you talk about RELIABLY making decisions then I definitely agree with you. They can't even be reliable with stuff they extensively saw in training, when you get out of the "confort zone" the odds of it taking the correct decision drops fast.
But with AI companies trying to get as much data as they can from their workers and from common people, and with the scary new trend of smart glasses (even though I'm a fan of augmented reality as a concept) we will see how things evolve...