Let’s think about this ridiculous, impossible thought experiment, as the presenter puts it. Imagine that you have a complete list of every FACT about the universe, every single fact about every star, every planet, every proton, every neutron, every dog, every house, every piece of information that is known about the entire universe. It would be fairly a big book. And it of course includes therefore every fact about every person, whoever has lived or ever will live. Their name, their address, their place of birth, their place of death, what they had breakfast on a certain date; every piece of information is gona be in there. 
There is one simple question that you ask yourself, which one of those people listed in their is you?  
You might think that it’s fairly straightforward I shall simple look my name up presumably this thing is searchable. Okay there you go, you found all the stuff about you. You found your entry. 
What I am asking is what makes you, the person actually reading through the list, that person that is listed there? You got a set of facts about A person, what is that in you that SUBJECTIVE PERSON that is looking at that list the person listed in that book. It seems like I can give a complete description of universe including all the people in it, without ever including the fact,and that that particular one there is me. What is the relationship between me as a subjective first person perspective with that objective person who is listed there. This is told by Thomas Negal, contemporary American philosopher, who says that okay if looks like if we have such an inventory, it seems like which one of those people is me, is a fact that we care about that we can’t find in our list. You can’t find it because the list is a completely third personal inventory of the universe. It’s a completely objective list. There is no place in that list for first personal. So it seems like we can describe the whole universe without actually describing first person, without bringing me or I into it. And in the same way, it seems like, we can describe persons without saying which one of that persons is me or I, or which one is me or which one is you. So it seems like a completely third personal objective account of the universe such as science finds us for instance isn’t going to tell us which one those people is me or you. It has no room in that universe for first person perspective. 
Taken from the video by Patrick Strokes on his presentation on personal identity at Ethics Center in Sydney.