Understanding the brain isn't only about collecting data, it is about our basic perception of the world around us, the way we arrange data into coherent structures. There's a fundamental barrier between code and its output - the brain's structure and our subjective experiences, our genes and our physical traits, DNA structure and cell differentiation - in order to relate one level of data to a different, more subjective, manifestation of it we need to find new ways of conceptualization, which might be impossible to do on purpose, and might be inherently related to the way we live our lives.
Interesting reading only I expected to learn more. It ends up with the simple concept of memories being mapped to cells, which I didn't know, but it also doesn't surprise me - the brain must store the information somehow.
And Jennifer Aniston is just an example of a memory, so nothing special about her.