Snape,Harry and the Pensieves

[sylviablundell2001]

No: HPFGUIDX 79850

Sarah wrote:
Snape made a point of taking out the pensieve, removing some thoughts 
from his head and transferring them to the pensieve in front of 
Harry. That's like taking out a diary in front of another person, 
writing something in front of them, and putting it away.

Surely Snape is unaware that Harry has any previous knowledge of 
pensieves or their function. To him, itwould be like leaving his 
diary in the same room as an illiterate person who would have no idea 
of how to use it. If he had known that Harry knew exactly what a 
pensieve was, I doubt if he would have left him alone with it.
Sylvia (who keeps a rather uninteresting diary, but would hate anyone 
nosing into it).