Mr. Stevens:
The adivce of Polonius is good and sound and a good mark of Elizabethian Chivalry and Courtesy.
However, Polonius is a dottering old hyporcrite - sending messengers to go spy on his son's behavior.....(his accidental death ... needs to be deemed waranted - for the dramitc irony - and relationship with the audience.) and lending support to Hamelt's role as the hero.
Sincerely,
Gargoyle