> There is an implicit assumption that they are a democratic society where a decision was taken with the consent of everyone. You have no way of knowing that. For all you know, they could very well be a cult with some old fogey launching attack troops at the evil invaders whilst the young struggle mightily against the oppressive regime.
Or they could be communists. Or anarchists. Or whatever. We have only slight evidence to make any sort of judgement, that evidence being that every time a non-islander has gone near them, the visitor has been repelled or avoided. If that says anything to you besides 'go away' then you're projecting your own opinions onto them.
> That is rather patronizing. You have no way of knowing if they are interested in that. No one knows if they like blueberry pie unless they actually try blueberry pie.
I'm sorry that you chose to interpret it that way; that's not what I intended. The point I was trying to make was that I couldn't imagine these people engaging in any activities unrelated to their current way of life. The reason I make this statement is that they've had thousands and thousands of years to do so and yet apparently haven't. And yes, by your earlier argument, maybe they have a secret underground facility or perhaps they're the prisoners of some other advanced agent but I'm inclined to prefer the simplest explanation which is that they are a basic tribal society with no interest in the world outside their borders. The evidence, scant though it is, suggests nothing more than that without speculation on our part. It's not patronising to suggest that they don't think like others of us do.
Recall that the original post I replied to posed the question of whether or not it was unethical to withhold modern learning from them, and my point (which still stands) is that invading the home land of a group of people who are all shouting "we don't want blueberry pie" to give them blueberry pie because we think it's delicious but dammit, they haven't tasted it yet so how do they know? would be unethical, not the other way around.
If they want to meet us, and partake in the exciting wonders of the modern age - the rest of humanity is a boat ride away. All they need to do is develop oars. Or at least stop shooing away visitors.