Empty examples have a hollow ring unlike any. Show us the dissonance you see?
Here's an example: A karateka steps in a beating in a train to end the felony battery in progress: Perhaps wasn't dramatic as saving a life, but "combat" has occurred and has positively stopped the suffering although the perp got away, which is OK since the civilian has no power of cohersive arrest.
Seems like you found karate lacking since unable to kill/stop with a single blow so moved to aikido - that is dissonance of a high order.
The cup is only empty if one is unable to see the potential it could hold.