The anatomy student in me closed in on the fact that the hand being operated on was/is in the wrong position.  I know, it's trivial, but that's just me sometimes.  
I am glad that someone chose this piece.  After reading about it in our text, I was hoping someone would.  It is a rather accurate depiction of the simplicity with which the advances of science began.  Also, It is a great way to see the development of artistic abilities in bringing a since of realism to their works. 
Rembrandt's versatility and aptitude are quite clear, but I am curious to know if he had any sort of scientific background.  I am aware that this era had artists creating works with more of a scientific and educational influence.  I was wondering if Rembrandt's influences came from his actual education or from the general era.
I agree that this should be preserved.  It is a great piece to show the changing times, not only from an artistic standpoint but also from a scientific one as well.