I don't think the world is an illusion - but rather our perception of the world is.
We only see a very limited spectrum of light, but we don't realize the massive gaps we cannot see. All of our senses are a tiny pinhole into the world, and we base our reality on them. Our sense of smell is a fraction of other mammals, we really don't notice that a dog could be smelling 20 things in a room that we don't notice.
Not that we really have any other option, but I am just trying to explain the 'illusion' of it.
We only see a very limited spectrum of light, but we don't realize the massive gaps we cannot see. All of our senses are a tiny pinhole into the world, and we base our reality on them. Our sense of smell is a fraction of other mammals, we really don't notice that a dog could be smelling 20 things in a room that we don't notice.
Not that we really have any other option, but I am just trying to explain the 'illusion' of it.