This idea came up in another thread and I thought it might make for an interesting discussion. So, what are your thoughts? I have always believed that the loss of the library at Alexandria may be one of the greatest tragedies of all time. Of course we can't know what we are missing, but there is reason to believe that this was a monumental loss to humanity. Of course loss of life is hard to compare to loss of information, but who knows how much we had to re-discover; say for example medical information that could have saved the lives of millions through the ages.