Experience is not like the perceiving of a field, however vast and multidimensional, it is not the real reality that would correspond to so-called virtual reality which interactively feeds the senses with synthetic contents, or in other words it is not a stream of qualia. On the other hand all of such examples are experiences, they are simply not experience in essence because that is primarily intelligibility, even if the terms of this intelligibility are wholly implicit. Animals clearly live their lives in an intelligible world; we can recognise this without knowing the structures and limits of that intelligibility, but it remains always in question for us. We are nearly as foreign to ourselves, despite the efforts of psychologists, but we swim effortlessly in our intelligible world without recognising it at all. The is why it makes sense to say that experience is ungrounded. To be grounded would be to comprehend its own (conditions of) possibility. The question hangs unanswered for the intelligibility that we are, and this bothers us. Every striving seems to be ultimately an attempt to know ourselves, but the self is irrelevant. The only answer would be to achieve grounding. And this is so even after you have 'proven' that no such goal is attainable.