No conscious person can know if another person is conscious. There is no 'sensation' of experiencing another conscious. Given how many people can and have been fooled by AI, this lack of ability to sense another consciousness is clear.
That's the basis of the p-zombies thought experiment discussed (and dismissed without any real arguments) in the article.
That's the basis of the p-zombies thought experiment discussed (and dismissed without any real arguments) in the article.