Recently, reading one book I have come across such paragraph:

`"[...] The operation would require de facto to create a complete record of the mind and build the brain again - an impossible thing for absolutely fundamental reasons. Cognitive science has its own theorem on uncertainty, the law proving the impossibility of reducing the mental structure to numerical data."`

I am guessing, that the author was referring to the Heisenberg's uncertainty theorem, but that is the only thing that came to my mind (my knowledge about cognitive sciences is very limited). Do you know, what the author might have meant? Or maybe it was just fiction?