First time poster!
I just burnt a piece of paper containing a 5 digit number I made up randomly and as far as I am concerned no one else will ever be able to retrieve the information contained on that piece of paper. So to me this information is lost irretrievably. From my reading of the literature (more pop science than technical papers) the consensus is information is never lost in a black hole, but is my simple experiment an example of the fact that information can be lost? How can any time reversal process ever possibly recover that five digit number?