If you'll go into Picasso museum, you'd be pretty tired to hear the same parts about his biography for each artwork, so would be really great if we avoid repeating the same information more than few times.
Few considerations:
Taking this into account requires storing history of requests
For demos and occasional usage this can hurt experience. Maybe we should only count information that was told in a short time period, like in a day, but if we told about Picasso bio yesterday, it's OK to repeat it today again.
If you'll go into Picasso museum, you'd be pretty tired to hear the same parts about his biography for each artwork, so would be really great if we avoid repeating the same information more than few times.
Few considerations: