How do I ambush a party with a Rogue who has 23 Passive Perception in it?

@mikemearls How do I ambush a party with a Rogue who has 23 Passive Perception in it? Actually, how do you use PP in general, it feels odd.

— Niklas Wiklund (@MrVojjin) January 29, 2016

Short answer – that character is really good at stopping surprise attacks. Let them find those ambushes! https://t.co/w8EwG8PPV6

— Mike Mearls (@mikemearls) January 29, 2016