Is there a "right to knowledge"?
I'm aware of rights to speech, thought, movement, conscious, religion, expression, assembly, association, etc. But I've never heard anyone claim, or read any charter/constitution/etc. that has a "right to knowledge" clause.
Is there a country which has enshrined a "right to knowledge"? Does it have any limits (alluding to what you mentioned, how does the right to knowledge interact with other rights)?