Most of experience is substitutable, what it is could belong to anyone and the experiencing itself is somewhat displaced: 'somebody is experiencing X, and that happens to be me (but I could be mistaken about that).' In the limit it perhaps hardly matters who it is, or if there is a who at all, you freely walk in and out of the scene. There are other experiences that are taken to be direct and highly valued, sensory or mostly sensory, or various states deemed positive. The give-away here is that these are the one for which mimetic desire is most in evidence and they are also the ones for which it is vital to be witnessed in the act of enjoyment. If the former are paper currency the latter are precious metals - they are still symbolic and established by consensus, but there it little room to doubt their basis. The authentically personal experiences, the ones for which there is no possible substitution, and no mimesis are rather undesirable, are cause for shame rather than pride.