Everybody else? No idea. Maybe they are having the exact same experience as me right now. Maybe they're all golems. Impossible to know. It's something spiritual, something that I just choose to believe in.
I don't find it difficult to believe the same for AIs.
Specifically, you cannot know another person is conscious in the same way you know a physical fact; rather, you believe in their consciousness through communication, empathy, and shared subjective experience.
You’re an intelligent mammal, your biological makeup encoded in DNA. So are all other people, who largely share that same DNA. You’re conscious. It’s not a big leap to conclude that so are other people, too.
This kind of solipsistic sophistry is not productive. It might be entertaining if you’re contemplating the underpinnings of epistemology for the first time in your life, but it’s not an honest contribution to the debate.
You might as well claim that you have no idea if gravity will be in effect tomorrow.
We seem to agree. Not a big leap, but a leap nonetheless.
"I can't be certain about anyone else" does not imply "all non-self consciousness claims are equally uncertain". absence of certainty and the absence of evidence and all that.
your "possibility" word is doing a lot of work there I think. you should add "rocks" to your list as well and you'd be equally correct, but we're evaluating the candidates here
Proposed categorization: "definitely not conscious", "maybe conscious" and "definitely conscious". All living things belong in "maybe conscious". Each person is sure that they belong to the "definitely conscious" set, but people cannot prove this to each other. Their empathy causes them to add other people to the "definitely conscious" set. Many choose to add animals to that set too. Some add even inanimate objects to it.