If the world's existence is existence in a mind, if these are the same thing, then at some minuteness of examination the world should exhibit a mind-like character. Whether it does so or not is not clear - it depends on what you mean by mind-like - and on what you mean by exhibit, since any thing seen, even by way of theoretical prosthetics, is only a reflection of the inner, or transcendental, nature of what is seeing. And again, how do you know what is mind-like, your own mind being only a very limited sample. But it is the same as saying that regardless of the structure of any mind, the range of possible minds, or mind-like embodied subjects, being unlimited, everything is ultimately for a subject, which can only be One Subject, so that what is really at stake is that you are directly 'connected' to the core of reality by the back door, by the upstream of every possible upstream.