As Corp, you have to bluff often. You try to represent a different game state than the one that exist - whether that is dumping agendas in Archives or leaving HQ naked when you have two agendas in there, Corp play involves lots of little bluffs and some big ones.
What about Runner? When does the Runner bluff? I can think of a couple examples.
Runner holds a Stimhack in hand to try to send message that it can’t get into a remote hoping Corp tries to score.
Geist pops a Spy Cam and runs R&D hoping to force ice rez even though the card on top is not an agenda.
What other examples do you have?