What about something concrete, like the sensation of pain? I can feel it, and everybody else can probably agree that they feel it too, even if they can't confir

What about something concrete, like the sensation of pain? I can feel it, and everybody else can probably agree that they feel it too, even if they can't confirm that others do. How would you go about reproducing this sensation in a computer? While your hand, say, might be physically hurt (say, it caught fire), to your brain it's only information coming in that says "now you should feel pain". You can simulate that in a computer.