Psychological warfare - it's where this Scottish Cup Final will be won and lost and Hearts have a secret weapon in the mind games.
Emotions in football are underestimated, big occasions, the adrenalin pumped atmospheres, failure and success, it can all drain and emotionally ruin you.
Make no mistake, Hampden is now all about the mental battle between two teams who have had starkly different build-ups to this clash.
